SCIENTIFIC PUBLICATIONS

of Ivan G. Pojarlieff

TEXTBOOK: Physical Organic Chemistry and Dynamic Stereochemistry, ASI Print, Sofia, 2001; ISSN 954-90252-6-8

 

120. Interaction between charged groups.pK-Values and conformations of 3-amino-2,3-diphenyl-propanoic acid and their ester and N-acetyl derivatives. P. M. Ivanov, I. G.. Pojarlieff, S. D. Simova, and G. D. Velinov: Bulg. Chem. Comm. 46 (2014) Special Issue A, 9-14.

119. Linear Free Energy Relationships of the gem-Dimethyl (gem-Dialkyl) Effect I. B. Blagoeva, E. P. Ignatova-Avramova, A. H. Koedjikov, I. G. Pojarlieff*, L. I. Proevska, V. T. Rachina, N. G. Vassilev. Bulg. Chem. Comm. 40 (2008) 386-396 (appeared 2009)

118. Autoxidation of a 4-iminoimidazolidin-2-one with a tertiary 5-hydrogen to its 5-hydroxy derivative Violina T. Angelova, Nikolay G. Vassilev, Anne-Sophie Chauvin, Asen H. Koedjikov, Petko M. Ivanov, and Ivan G. Pojarlieff*: ARKIVOC, 2008 (xi) 11-23.

117. Acid catalysed intramolecular attack of -phenylthioureido group on amide function. Parallel formation of thiodihydrouracil and 4-iminothiodihydrouracil. Different pathways in the Edman degradation reaction in the formation of six vs. five membered cyclic intermediates. Ivan G. Pojarlieff, Iva B. Blagoeva, Maria M. Toteva, Ergun Atay, Violina T. Angelova, Nikolay G. Vassilev and Asen H. Koedjikov: J. Phys. Org. Chem., 21 (2008) 14-22.

116. Hydrolysis of 4-imino-imidazolidin-2-ones in acid and the mechanism of cyclization of hydantoic acid amides. V.T. Angelova, N.G. Vassilev, A.H. Koedjikov, I.G. Pojarlieff: Org. Biomol. Chem., 2007. 5, 2835-2840.

115. Stereoelectronic effects in intramolecular S*N acyl migrations in diastereoisomeric 3-amino- and 3-methylamino-1,2,3-triphenylpropyl thiolacetates, Vanya B. Kurteva,* Maria J. Lyapova and Ivan G. Pojarlieff, ARKIVOC, 2006, (2) 91-100.

114. Sigma-I Values for 3-arylureido groups. Transmission of inductive effects by the ureido group. V.T. Stoyanova, A.H. Koedjikov, N. G. Vassilev, I.B. Blagoeva, I.G. Pojarlieff, Bulg. Chem. Comm., 2005, 37, 260-266.

113. Sigma-I-Values for arylureido groups Iva B. Blagoeva, Asen H. Koedjikov, Ivan G. Pojarlieff and Stefan P. Stanchev, Coll.Czech.Chem.Comm., 2004, 69, 2276-2280.

112. The role of micelles of Multiblock Copolymers of Ethylene Oxide and Propylene Oxide in ion transport during acid bright copper electrodeposition. Nadya Tabakova, Ivan Pojarlieff, Vera Mircheva, Jaroslav Stejskal* Macromol. Symp. Electronic Phenomen in Organic Solids. Ed. Jaroslav Kahovec, 2004, 212, Wiley-VCH, p. 467-472.

111. Thorpe-Ingold effects in cyclizations to five-membered and six-membered rings containing planar segments. The rearrangement of N(1)-alkyl-substituted dihydroorotic acids to hydantoinacetic acids in base. J. Kaneti, A.J. Kirby, A.H. Koedjikov and I.G.Pojarlieff*, Org. Biomol. Chem., 2004, 2, 1098 - 1103.

110. A large gem-dimethyl effect in the cyclization of ?-phenylhydantoic acids. Computational modeling of cyclization rates of substituted hydantoic acids and esters in acid and in base P. M. Ivanov, I.G. Pojarlieff, I. B. Blagoeva, C. Jaime, V. T. Angelova and A. H. Koedjikov, J. Phys. Org. Chem. 2004, 17, 423-430.

109. Synthesis of 4-imino-1-methyl-3-(4-nitrophenylimidazolidin-2-ones; pK-values, E,Z-isomerism and exchange of the imino proton. Violina T. Angelova, Nikolay G. Vasilev, Asen H. Koedjikov and Ivan G. Pojarlieff Bulg. Chem. Comm., 2003, 35, 122-128.

108. Schiff Base Addition to Cyclic Dicarboxylic Anhydrides an Unusual Concerted Reaction. A MO and DFT Theoretical Study, J. Kaneti, S. Bakalova and I. G. Pojarlieff, J. Org. Chem., 2003, 68, 6824-6827.

107. Kinetics and mechanism of the cyclization of -(p-nitrophenyl)-hydantoic acid amides: steric hindrance to proton transfer causes a 104-fold change in rate, Violina T. Angelova, Anthony J. Kirby, Asen H. Koedjikov and Ivan G. Pojarlieff* Organic and Biomolecular Chemistry, 2003, 1, 859-865.

106. The gem-dimethyl effect in reactions through tetrahedral intermediates: cyclizations of some ethyl 2,3-disubstituted-5-(p-nitrophenyl) hydantoates, Asen H. Koedjikov, Petko M. Ivanov and Ivan G. Pojarlieff, ARKIVOC, 2 (12) (2001), 44-57; http://www.arkat.org/arkat/journal/Tee/content.htm

105. Stereochemistry of Conjugate Addition and Metallation Reactions Yielding the Enolate of 3,3-Diphenylpropiophenone, E. P. Ignatova, I.G. Pojarlieff, Bulg. Chem. Commun., 32, 202 (2000); Chem. Abs., 135, 122086 (2001).

104. A normal gem-dimethyl effect in the base-catalyzed cyclization of -(p-nitrophenyl)- hydantoic acids: evidence for hindered proton transfer in the permethylated esters, Iva B. Blagoeva, Anthony J. Kirby, Ivaylo I. Kochiyashki, Asen H. Koedjikov, Ivan G. Pojarlieff and Maria M. Toteva, J. Chem. Soc., Perkin Trans. 2, 2000, 1953-1960.

103. Dissociation Constants for the Ureido Group in Some Methyl Substituted -(4-Nitrophenyl)hydantoic Acids, Iva B. Blagoeva, Asen H. Koedjikov, Ivan G. Pojarlieff and Maria M. Toteva,  Compt. r. Acad. Bulg. Sci., 53, No 10 (2000) 33.

102. Assisted hydrolysis of cis-2-(3-phenylthioureido)cyclopentane-carbonitrile in alkaline solution. Solvent dependent switch from hydrolysis to rearrangement of the iminothiooxopyrimidine intermediate Ergun Atay, Iva B. Blagoeva, Francis L. Chubb, J. T. Edward, Ivan G. Pojarlieff, and Maria M. Toteva, Can. J. Chem., 78 (2000) 84-94.

101. Multiple changes in rate determining step in the acid and base catalyzed cyclizations of ethyl N-(p-nitrophenyl)hydantoates caused by methyl substitutions. Iva B. Blagoeva, Anthony J. Kirby, Asen Koedjikov H. and Ivan G. Pojarlieff, Can. J. Chem. 77 (1999) 849-859.

100. On the mechanism of the general acid-catalysed cyclization of hydantoic acid esters. Ergun Atay, Iva B. Blagoeva and Ivan G. Pojarlieff, Compt. r. Acad. Bulg. Sci., 53, No 2 (2000) 61.

99. On the disappearance of the gem-dimethyl effect in the base-catalysed cyclization of ethyl hydantoates. Ergun Atay, Iva B. Blagoeva, Anthony J. Kirby and Ivan G. Pojarlieff, J. Chem. Soc., Perkin Trans. 2, 1998 2289-2297.

98. Unusual Azetidine or Oxazine Formation upon Reaction of Xanthate with 3-Phthalimido -1,2,3-triphenylpropyl iodides. Erythro selectivity in the Reaction of Iodotrimethylsilane with Phthalimidopropanols. M. E. Ivanova, V. B. Kurteva, M. J. Lyapova and I.G. Pojarlieff, J. Chem. Res., (1998) 658.

97. 1H NMR Spectra and Structure of Safranines. Hindered Rotation of the 3-Dialkylamino Group in 7-Azo Derivatives, L.I. Proevska and I.G.Pojarlieff, Dyes and Pigments, 36 (1998) 177-190.

96. NH-Acidities of Some Sterically Hindered Ureas, I.G.Pojarlieff, I.B. Blagoeva, A.J. Kirby, B.P. Mikhova, and E. Atay. J. Chem. Res. (S) (1997) 220.

95. Butyllithium in 3,3-diphenylpropiomesitylene enolization - a comparison with other bases. E. P. Ignatova-Avramova and I.G. Pojarlieff, Izv. him., BAN, 28(2)(1995), 226.

94. The gem-dimethyl effect on reactivities in cyclizations through tetrahedral intermediates. Cyclization of methyl amides of 5-(p-nitrophenyl)hydantoic acids. A. H. Koedjikov, I.B. Blagoeva, I.G.Pojarlieff and A.J.Kirby, J. Chem. Soc., Perkin Trans. 2, (1996) 2479.

93. Computational study of the effect of configuration and the degree of substitution at N in NO and ON acyl migration in diastereoisomers of 3-amino-1,2,3-triphenylpropanol. P. M. Ivanov and I.G.Pojarlieff, Anales de Quimica, Intern. Ed. 92 (1996) 171-176.

92. The a-cyano-a-phenylacetic acid keto-enol system. Flash photolytic generation of the enol in aqueous solution and determination of the keto-enol equilibrium constants and acid dissociation constants interrelating all keto and enol forms in that medium. J. Andraos, Y. Chiang, A. J. Kresge, I.G. Pojarlieff, N. P. Schepp and J. Wirz, J. Am. Chem. Soc. 116 (1994) 73.

91. The acidity constant of fluorene-9-carboxylic acid in aqueous solution. Determination of the pK of a sparingly soluble substance. A.J. Kresge, I.G. Pojarlieff, E. M. Rubinstein, Can. J. Chem., 71 (1993) 227.

90. Stereochemistry of 1-tosyl-2,3,4-triphenylazetidine formation upon solvolysis of 3-tosylamino -1,2,3-triphenylpropyl chloride or methanesulfonate. V. B. Kurteva, M. J. Lyapova, I.G. Pojarlieff, J. Chem. Res., (S) (1993) 270.

89. N,N-Dialkylsafranines with hydroxyl groups in the alkyl substituents. L. I. Proevska, E. P. Ignatova-Avramova, I.G. Pojarlieff, Dyes and Pigments, 21 (1993) 13.

88. Effect of the structure of aromatic disulfides on some physico-mechanical properties of electrodeposited copper coatings. D. Stoychev, I. Vitanova, R. Buyukliev, N. Petkova, I. Popova, I.Pojarliev, J. Appl. Electrochem. 22 (1992) 987.

87. Effect of some dialkyl-, diaryl-, and diarylalkyl- disulfide derivatives on copper electrodeposition. D. Stoychev, I. Vitanova, R. Buyukliev, N. Petkova, I. Popova, I. Pojarliev, J. Appl. Electrochem., 22 (1992) 978.

86. Molecular mechanics (MM) and MM-EHMO conformational analysis of the diastereoisomers of 3-amino-1,2,3-triphenyl-1-propyl chloride. P.M. Ivanov, T. Momchilova, I.G. Pojarlieff, J. Comp. Chem., 12 (1991) 427.

85. Beta-Ureido acids and dihydrouracils. Kinetics and mechanism of the reversible ring-closure of 3-(3'-methylureido)propanoic acid and 3-(3'-phenylureido)-2-methylpropanoic acid in sulfuric acid solutions. V. Rachina, I.B. Blagoeva, I.G.Pojarlieff and K. Yates, Can. J.Chem. 68 (1990) 1676.

84. Synthesis of diaryl and diarylmethyl disulfides with hydrophilic substituents as potential brighteners in acid copper plating. R. Buyukliev, I. Pojarliev, D. Stoychev, and A. Koedjikov, Izv. Otd. Khim. Nauki, 23 (1990) 456.

83. Intramolecular nucleophilic attack by urea nitrogen. Reactivity-selectivity relationships for general acid-base catalysed cyclisations of ureido acids and esters. I.B. Blagoeva, I.G. Pojarlieff, D.T. Tashev and A. J. Kirby, J. Chem. Soc. Perkin 2, (1989) 347.

82. The rearrangement of 1-alkyldihydroorotic acids into hydantoinacetic acids in aqueous alkali. A. H. Koedjikov, J. Kaneti and I.G. Pojarlieff, 31st International Congress of Pure and Applied Chemistry, Sofia, 1987, Abstracts of Poster Comm., Vol. 2, 6.97.

81. Three microcomputer programs for use in student training in organic chemistry and physical organic chemistry. M. Palamareva, H. Palamarev, I.Pojarlieff, I. Blagoeva, Doklad Parva natzionalna konferentziya po khimiya, Sektziya VII, Sofia, 1885 TzNTB 4290/86.

80. Tendencies in the improving of present and in developing new electrolytes and technologies for depositing copper plates of defined properties. S. Rashkov, D. Stoychev, L. Mirkova, I. Pojarliev, I. Juchnovsky, 3 Mezhdunarodnaya nauchno-tekhnicheskaya konferentziya po probleme SEF, Razrabotka mer zashtity metallov ot korozii, Warsaw (1980) Sbor. sek. dokladov, sektziya V,VI, p.107.

79. Stereoelectronic effects in S-N acyl migration of 3-amino- and 3-methylamino -1,2,3-triphenylpropyl thiolacetates. V. B. Kurteva, D. I. Kolev, M. J. Lyapova, I. G. Pojarlieff, 31st International Congress of Pure Applied Chemistry, Abstracts of Poster Communications. Vol. 2, 6-114.

78. Diastereoisomers with three neighbouring phenyl groups. XI. Hindered phenyl and formylmethylamino group rotations in 3-(formylmethylamino)-1,2,3-triphenylpropyl chlorides. V. S. Dimitrov, V. L. Kurteva, M. J. Lyapova, B. P. Mikhova and I.G. Pojarlieff, Magn. Res. Chem., 26 (1988) 564.

77. Molecular mechanics of diastereoisomers with phenyl groups on neighbouring carbon atoms. P. M. Ivanov and I.G. Pojarlieff, J. Mol. Struct. (THEOCHEM 170 (1988) 257.

76. Diastereoisomers with three neighbouring phenyl groups. X. Synthesis of 3-amino- and 3-methylamino-1,2,3-triphenylpropyl thiolacetates. V. B. Kurteva, M. J. Lyapova and I. G. Pojarlieff, Izv. Otd. Khim. Nauki, BAN, 21 (1988) 226.

75. Effect of neighbouring methyl and carboxyl group on the acid and base catalysed cyclization of 2-ureidobenzoic acid. I. B. Blagoeva, A. H. Koedjikov and I.G. Pojarlieff, Izv. Otd. Khim. Nauki, BAN, 21 (1988) 208.

74. Mono- and diformylation of 1-dimethylaminonaphthalene by the Vilsmaier reaction. R. T. Buyukliev and I.G. Pojarlieff, Compt. r. Acad. Bulg. Sci., 40 (1987) 71.

73. Quantitative determination of some brightening agents for bright acid copper plating. D. Stoichev, I. Popova, S. Stanchev and I.G. Pojarlieff, Koroze a ochrana materialu (Prague) 30 (1986)(3) 66.

72. Diastereoisomers with three neighbouring phenyl groups. IX. Relative configurations and conformations of 3-amino- and 3-methylamino-1,2,3-triphenyl-1-propyl chlorides. V. B. Kurteva, M. J. Lyapova and I.G. Pojarlieff, J. Chem. Res. (1986) (S) 398 (M) 3311-18.

71. Kinetics of ring closure of 5-phenylhydantoic acids in sulphuric acid solutions. Ionization constants of the phenylureido groups. I. B. Blagoeva, I.G. Pojarlieff, V. T. Rachina, Izv. Otd. Khim. Nauki, BAN, 20 (1987) 119.

70. Ground state strain and parallel cyclizations of N-carbamoylaspartic acid to five and six membered rings. I. B. Blagoeva and I.G. Pojarlieff, Compt. r. Acad. Bulg. Sci., 39 (1986)(10) 83.

69. Leffler relationship of the gem-dimethyl effect. I. G. Pojarlieff, V. T. Rachina, I. Blagoeva, Godishnik VHTI-Burgas 21(2)(1986) 25.

68. Leffler relationship of the gem-dimethyl effect. I. B. Blagoeva, I.G. Pojarlieff and V. T. Rachina, J. Chem. Soc., Chem. Comm., (1986) 946.

67. Beta-Ureido acids and dihydrouracils. XVIII. Conformations of ureidosuccinic acid and related beta-ureido acids. I. B. Blagoeva and I.G. Pojarlieff, J. Mol. Struc., 145 (1986) 115.

66. Conformation energy analysis of substituted diphenylethanes. XI. Molecular mechanics of diastereomeric 1,4-disubstituted 2,3-diphenylbutanes. P. M. Ivanov, E. Osawa and I.G. Pojarlieff, J. Mol. Struc., 144 (1986) 101.

65. The mechanisms of stereoselective Michael addition and stereoselective metallation yielding Z- and E-lithio-3,3-diphenylpropiomesitylene. E. P. Ignatova-Avramova and I.G. Pojarlieff, J. Chem. Soc., Perkin Trans., 2 (1986) 69.

64. 1H and 13C NMR study of the conformations of the atropisomers of some 1-(1-naphthyl) -2,4-dioxo-(or 2-thio-4-oxo)hexahydropyrimidines. B. J. Kurtev, I.G. Pojarlieff, S. D. Simova, R. S. Baltrusis, Z. H. Beresnevicius, G. A. Machtejeva and J. M. Vizgaitis, J. Mol. Struc., 128 (1985) 327.

63. Technology of electrodepositing thick and hard copper coatings for use in roto-printing. D. Stoichev, I. Vitanova, I. Pojarlieff and S. Rashkov, Poligrafiya (Moscow), (1984) No 9, 39.

62. Quantitative evaluation of the gem-dimethyl effect on the succinic acid - anhydride equilibria. Conformations of the acids and anhydrides by empirical force-field calculations. P. M. Ivanov and I.G. Pojarlieff, J. Chem. Soc., Perkin Trans., 2, (1984) 245.

61. Intramolecular nucleophilic attack on carboxylate by ureide anion. General acid-base catalysis of the alkaline cyclization of 2,2,3,5-tetramethylhydantoic acid. I. B. Blagoeva, I. G. Pojarlieff and A. J. Kirby, J. Chem. Soc., Perkin Trans., 2, (1984) 745-751.

60. One-pot synthesis of 2-alkylamino-4-oxo-4H-3,1-benzoxazines from anthranilic acids and alkyl isocyanates. A. H. Koedjikov, I. B. Blagoeva and I.G. Pojarlieff Compt. r. Acad. Bulg. Sci., 37 (1984) 765-769.

59. Effect of neighbouring carboxylate anion on a doubly charged transition state in the alkaline hydrolysis of dihydrouracils. I. B. Blagoeva, A. H. Koedjikov and I.G. Pojarlieff, Compt. r. Acad. Bulg. Sci., 37 (1984) 333-337.

58. Beta-Ureido acids and dihydrouracils. XV. Effect of allylic strain on ring opening of 1,6-disubstituted dihydrouracils. I. B. Blagoeva, A. H. Koedjikov, I. G. Pojarlieff and E. J. Stankevic, J. Chem. Soc., Perkin Trans., 2, (1984) 1077-1081.

57. Synthesis and conformations of 3-alkyl-2,6-dioxo-4-pyrimidinecarboxylic acids A. H. Koedjikov and I.G. Pojarlieff, Compt. r. Acad. Bulg. Sci., 36 (1983) 1191-1191. Chem. Abstr. 100, 191820h (1984)

56. Effect of allylic strain on the conformations of 1-aryl-6-alkyl-, 1-alkyl-6-aryl- and 1,6-dialkyl-dihydrouracils. R. S. Baltrusis, Z. H. Beresnevicius, A. H. Koedjikov, B. J. Kurtev, M. J. Lyapova, G. A. Machtejeva, I.G. Pojarlieff, Compt. r. Acad. Bulg. Sci., 36 (1983) 229.

55. Conformation energy analysis of substituted diphenylethanes. VIII. Conformations of some hydroxy and amino-substituted 1,2-diphenylpropanes. I.G. Pojarlieff, P. M. Ivanov and N. D. Berova, J. Mol. Struc., THEOCHEM, 91 (1983) 283.

54. Diastereoisomers with three neighbouring phenyl groups. VII. Conformations of the four diastereomers of 3-amino-1,2,3-triphenylpropanol and some N-alkyl derivatives. M. J. Lyapova, B. J. Kurtev and I.G. Pojarlieff, J. Chem. Res. (1983) (S) 62 (M) 0701-10.

53. Ring-closure tendencies of diastereomeric 3-amino-1,2,3-triphenylpropanols in reactions with carbonyl compounds. M. J. Lyapova, I.G. Pojarlieff and B. J. Kurtev, Compt. r. Acad. Bulg. Sci., 36 (1983) 221.

52. Effect of allylic strain on the conformations of diphenyl-substituted tetrahydro-1,3-oxazin -2-ones and hexahydropyrimidine-2-ones. B. J. Kurtev, M. J. Lyapova, S. M. Mishev, O. G. Nakova, A. S. Orahovatz and I.G. Pojarlieff, Org. Magn. Res., 21 (1983) 334.

51. Steric effects in alkaline hydrolysis of methyl-substituted 3-phenyldihydrouracils. I. B. Blagoeva, V. T. Rachina and I.G. Pojarlieff, Compt. r. Acad. Bulg. Sci., 35 (1982) 1499.

50. Conformational energy analysis of substituted diphenylethanes. IX. An NMR and EFF study of the diastereoisomers of (-)-menthyl esters of 3-amino- and 3-hydroxy-2,3-diphenylpropanoic acids, N. Berova, P. Ivanov and I.Pojarlieff, Izv. Otd. Khim. Nauki, BAN, 15 (1982) 228.

49. Conformations of N-substituted heterocycles with an endocyclic amide group. The effect of allylic strain. B. Kurtev. M. Lyapova, S. Mishev, O. Nakova, A. Orahovatz, I.Pojarlieff, Izv. Otd. Khim. Nauki, BAN, 15 (1982) 375.

48. A map of alternate routes treatment of the alkaline hydrolysis of anilides. D. D. Petkov and I.G. Pojarlieff, Izv. Otd. Khim. Nauki, BAN, 15 (1982) 247.

47. Alkaline hydrolysis of N-acetylglycine p-nitro- and p-acetyl-anilides. D. D. Petkov and I.G. Pojarlieff, Compt. r. Acad. Bulg. Sci., 35 (1982) 645-649.

46. Conformational energy analysis of substituted diphenylethanes. VII. Molecular mechanics and extended Huckel molecular orbital conformational analysis of threo and erythro 1,2-diphenyl-1-propanol. P. Ivanov, I.G. Pojarlieff and G. Olbrich, J. Mol. Struct., THEOCHEM, 88 (1982) 391.

45. Stereoelectronic effects in N->O and O->N-benzoyl migration in diastereoisomers of 3-methylamino-2,3-diphenylpropanol. I. G. Pojarlieff, M. D. Palamareva, B. J. Kurtev, C. r. Acad. Bulg. Sci. 35 (1982) 355.

44. Diastereomers with three neighbouring phenyl groups. V. N-O and O-N acyl migration in 3-amino-1,2,3-tripropanols. Reversed reactivities of the N-methyl derivatives under stereoelectronic control. M. J. Lyapova, I.G. Pojarlieff and B. J. Kurtev, J. Chem. Res. S (1981) 351, (M) 4083-4091.

43. Conformations of diastereoisomeric 3-acetylamino-1,2,3-triphenylpropanols. M. J. Lyapova, I.G. Pojarlieff and B. J. Kurtev, Compt. r. Acad. Bulg. Sci., 34 (1981) 1513-1513.

42. Dissociation constants and conformations of diastereomeric esters of 3-amino-2,3- diarylpropionic acids and related tetrahydroisoquinilines I.G. Pojarlieff, B. J. Kurtev, R. V. Stefanova and M. D. Palamareva, Compt. r. Acad. Bulg. Sci., 34 (1981) 1107.

41. Dissociation constants and conformations of diastereomeric esters of 3-amino-2,3- diarylpropionic acids and related tetrahydroisoquinolines I.G. Pojarlieff, B. J. Kurtev, R. V. Stefanova, M. D. Palamareva and M. Haimova, Godishnik Univ. Sofia, "Kliment Ohridski", 74 (1979-1980) 246-257.

40. Diastereoisomers with three neighbouring phenyl groups. III. Conformations of 2-oxo-4,5,6-triphenyltetrahydro-1,3-oxazines. I.G. Pojarlieff, M. J. Lyapova and B. J. Kurtev, J. Chem. Res. (1980) (S) 231, (M) 3119-3127.

39. Linear free-energy-steric strain energy relationships of the gem-dimethyl effect. Acid-catalysed ring closure of methyl substituted 3-ureidopropionic acids. I. B. Blagoeva, B. J. Kurtev and I.G. Pojarlieff, J. Chem. Soc., Perkin Trans. 2 (1979) 1115.

38. Alkaline hydrolysis of hydantoin, 3-methylhydantoin and 1-acetyl-3-methylurea. Effect of ring size on the cleavage of acylureas. I. B. Blagoeva, I.G. Pojarlieff and V. S. Dimitrov, J. Chem. Soc., Perkin Trans. 2 (1978) 887.

37. Conformational energy analysis of substituted diphenylethanes. VI. Calculation of the solvent dependence of the conformational equilibria in stilbene dihalogenides. Intramolecular interactions in the PCILO framework. P. M. Ivanov and I.G. Pojarlieff, J. Mol. Struct., 64 (1980) 67.

36. Empirical energy calculations on threo and erythro 2-amino-1,2-diphenylethanol. P. Ivanov and I. G. Pojarlieff, Compt. r. Acad. bulg. Sci., 31 (1978) 201-205.

cit. 2

35. Configurational assignment of the cis and trans isomers of the enolates of 3,3-diphenylpropionylmesitylene. E. P. Ignatova and I. G. Pojarlieff, Izv. Otd. Khim. Nauki, BAN, 10 (1977) 608.

34. The change-over to rate-determining addition upon 3-aryl substitution in the alkaline hydrolysis of dihydrouracils and hydantoins. I. B. Blagoeva and I. G. Pojarlieff, Compt. r. Acad. Bulg. Sci., 30 (1977) 1043. cit. 3

33. Conformational energy analysis of substituted diphenylethanes. III. Intramolecular interactions and stable conformations of the meso and R,S-isomers of 1,2-diphenylethanediols and 1,2-diphenylethylenediamine. P. M. Ivanov and I. G. Pojarlieff, J. Mol. Struct., 38 (1977) 269. cit. 9

32. Conformational energy analysis of substituted diphenylethanes. II. Empirical energy calculations on stilbene dihalogenides. P. M. Ivanov and I.G. Pojarlieff, J. Mol. Struct., 38 (1977) 259.

cit. 14

31. Conformational energy analysis of substituted diphenylethanes. I. Empirical force field calculations on dibenzyl. P. M. Ivanov, I.G. Pojarlieff and N. Tyutyulkov, Izv. Otd. Khim. Nauki, BAN, 9 (1976) 516. cit. 3

30. Intramolecular interactions in dibenzyl. P. M. Ivanov, I.G. Pojarlieff and N. Tyutyulkov, Tetrahedron Letters (1976) 775. cit. 28

29. Ionization constants, copper and nickel complexes of cis and trans-hexahydroanthranilic acid. I.Pojarlieff, A. Toleva, M. Genchev, Nauchni trudove Plovdiv Uni., 13 (3)(1975) 27; in Bulgarian.

28. Copper (Cu2+), nickel (Ni2+) and cobalt (Co2+) complexes of the diastereomeric 3-amino-2-methylbutyric acids. I. Pojarlieff, A. Toleva, M. Genchev, Nauchni trudove Plovdiv Uni., 13 (3)(1975) 17; in Bulgarian.

27. Structure-reactivity relationship in the urokinase hydrolysis of -N-acetyl-L-lysine anilides. D. Petkov, E. Hristova, I.Pojarlieff, N. Stambolieva, Eur. J. Biochem., 451 (1975) 25. cit. 20

26. Copper and nickel complexes of 3-amino-2,2-dimethylpropanoic acid. M. Genchev, I.Pojarlieff, A. Toleva, Nauchni trudove Plovdiv Univ., 11 (3) (1973) 35; in Bulgarian

25. Allylic strain in some N-substituted trans-4,5-diphenyl-2-oxo-tetrahydro-1,3-oxazines. A. S. Orahovatz, S. M. Mishev, I.G. Pojarlieff, B. J. Kurtev, Compt. r. Acad. Bulg. Sci., 26 (1973) 1625.

cit. 2

24. Acidities of some substituted phenylacetic acid nitriles, tert.-butyl esters and dimethylamides. K. Zaharieva, J. N. Stefanovsky, I.G. Pojarlieff, Izv. Otd. Khim. Nauki, BAN, 4 (1971) 427. cit. 2

23. pKAH-values of nitriles, tert.-butyl esters and dimethylamides of some phenylacetic acids. K. Zaharieva, J. N. Stefanovsky, I.G. Pojarlieff, Tetrahedron Letters (1971) 1663. cit. 10

22. Conformations and ionization constants of the diastereomeric 3-amino-2-methylbutyric acids. M. Gentschev, A. Toleva and I.G. Pojarlieff, Compt. r. Acad. Bulg. Sci., 23 (1970) 799. cit. 1.

21. Beta-Ureido acids and dihydrouracils. X. Steric effects on alkaline hydrolysis of dihydrouracils. I.Pojarlieff, Z. Burgudjiev, I. Blagoeva and B. Kurtev, Izv. Otd. Khim. Nauki, BAN, 3 (1970)593. cit. 1

20. Conformational energies of the acetyl-, benzoyl-, p-tosyl-amino and ureido group. I.G. Pojarlieff and S. Mihailov, Izv. Otd. Khim. Nauki, BAN, 3 (1970) 133.

19. Beta-Ureido acids and dihydrouracils. IX. Kinetics and mechanism of alkaline hydrolysis of dihydrouracils. I. B. Blagoeva, B. J. Kurtev and I.G. Pojarlieff, J. Chem. Soc., B (1970) 232. cit. 15

18. Stereochemistry and reactivity of dihydrouracils. I. Pojarlieff, I. Blagoeva and B. Kurtev, Izv. Otd. Khim. Nauki, BAN, 2 (1969) 651. cit. 2

17. Beta-Ureido acids and dihydrouracils. VIII. pK of some alkylsubstituted dihydrouracils. I. Pojarlieff and K. Zaharieva, Izv. Otd. Khim. Nauki, BAN, 2 (1969) 341.

16. The kinetics and mechanism of electrophilic substitution of heterocyclic compounds. XVI. Acid-catalysed hydrogen exchange of some pyridazine derivatives. A. R. Katritzky and I.G. Pojarlieff, J. Chem. Soc., B (1968) 873. cit. 24.

15. Beta-Ureido acids and dihydrouracils. VII. Applications of proton resonance spectroscopy. XXXII. NMR Spectra and conformations of dihydrouracils and related compounds. A. R. Katritzky. M. R. Nesbit, B. J. Kurtev, M. Y. Lyapova and I.G. Pojarlieff, Tetrahedron, 25 (1969) 3807. cit. 62.

14. Spectre RMN du phenyl-6 dihydrouracile. I.G. Pojarlieff Bull. Soc. Chim. Fr., (1968) 5033. cit. 2.

13. Cyclization of the diastereomeric 3-ureido-2-methylbutyric acids - activation parameters and rates of the reverse reaction. I.G. Pojarlieff, I. B. Blagoeva and B. J. Kurtev, Compt. r. Acad. bulg. Sci., 21 (1968) 689-693. cit. 2.

12. Equilibration of the cis and trans isomers of 5,6-dimethyl- and 5,6-tetramethylene-dihydrouracil. I.G. Pojarlieff, Compt. r. Acad. bulg. Sci., 21 (1968) 245-249 (Chem.Abstr. 1968, 69,66786s). cit. 8.

11. Preparation and rates of alkaline hydrolysis of cis- and trans-5,6-tetramethylenedihydrouracils. I.G. Pojarlieff, R. Z. Mitova-Chernaeva, I. B. Blagoeva, B. J. Kurtev, Compt. r. Acad. bulg. Sci., 21 (1968) 131-135 (Chem. Abstr. 1968 , 69, 51283). cit. 10

10. Kinetics of cyclization of 3-ureidopropionic acid to dihydrouracil in hydrochloric acid. I.G. Pojarlieff, Tetrahedron, 23 (1967) 4307. cit. 14

9. The cyclization of beta-ureido acids and their esters as a method for determining the relative configurations of diastereomeric beta-amino acids and 5,6-disubstituted dihydrouracils. B. Kurtev, M. Lyapova, N. Berova, I. Pojarlieff, A. Orahovatz, P. Petrova and N. Mollov, Izv. Otd. Khim. Nauki, 1. #1 (1968) 51-75; in Russian cit.8

8. Synthesis and relative configurations of the diastereomeric DL-3-amino-2-methylbutyric acids. B. J. Kurtev and I.G. Pojarlieff, Izv. Inst. Org. Khim., BAN, 1 (1964) (1) 91-108; in Russian.

7. The relative configurations of the diastereomers of DL-3-amino-2-methylbutyric acid. A convenient method for their preparation via the Hofmann rearrangement. I.G. Pojarlieff and B. J. Kurtev, Tetrahedron Lettr. (1963) 522-527. cit. 3

6. Synthesis of the diastereomeric DL-3-amino-2-methylbutyric acids by the Rodionov reaction. B. Kurtev and I. Pojarlieff, Compt. r. Acad. bulg. Sci., 16 (1963) 65-69; in Russian. cit. 3

5. New colour reactions of some pyrazolone derivatives, M. Genchev and I.G.Pojarliev, Trudove VMI Sofia (1959) 17-21; in Bulgarian

4. Einfluss der Komplexbindung auf die Reaktionsfahigkeit organischer Verbindungen: M. Genchev, I. Pojarliev und D. Kolev, Compt. r. Acad. bulg. Sci., 12 (1959) 305-308. cit. 2

3. Studies on complex compounds of aromatic amines. IX. Manganous complex compounds of the bichromate series. M. Genchev and I. Pojarliev, Compt. r. Acad. bulg. Sci., 12 (1959) 219-203.

2. Studies on complex compounds of aromatic amines. VIII. Complex copper compounds of the chromate and bichromate series. M. Genchev and I. Pojarlieff, Compt. r. Acad. bulg. Sci., 9, #4, (1956) 33-37.

1. Studies on complex compounds of aromatic amines. VII. Complex nickel compounds of the chromate and bichromate series. M. Genchev and I. Pojarlieff, Compt. r. Acad. bulg. Sci., 9, #4, (1956) 29-33.