Three-component condensation in the synthesis of substituted tetrahydropyridinethiolates
作者:K. A. Frolov、V. V. Dotsenko、S. G. Krivokolysko、V. P. Litvinov
DOI:10.1007/s11172-005-0404-3
日期:2005.5
Multicomponent cyclocondensation of Meldrum's acid, 2-chlorobenzaldehyde, and N-(4-bromophenyl)-3-amino-3-thioxopropanamide in the presence of N-methylmorpholine afforded N-methylmorpholinium 3-[N-(4-bromophenyl)carbamoyl]-4-(2-chlorophenyl)-6-oxo-1,4,5,6-tetrahydropyridine-2-thiolate in 65% yield. When treated with dilute HCl, the thiolate easily transformed into N-(4-bromophenyl)-4-(2-chlorophenyl)-2-oxo-6-thioxopiperidine-5-carboxamide, which reacted with alkyl halides to give products of regioselective S-alkylation in high yields.
Synthesis and properties of 5-amino-1,2,3-thiadiazole-4-carbothioamides
作者:E. F. Dankova、V. A. Bakulev、M. Yu. Kolobov、V. I. Shishkina、Ya. B. Yasman、A. T. Lebedev
DOI:10.1007/bf00474054
日期:1988.9
DANKOVA, E. F.;BAKULEV, V. A.;KOLOBOV, M. YU.;SHISHKINA, V. I.;YASMAN, YA+, XIMIYA GETEROTSIKL. SOED.,(1988) N 9, S. 1269-1273
作者:DANKOVA, E. F.、BAKULEV, V. A.、KOLOBOV, M. YU.、SHISHKINA, V. I.、YASMAN, YA+
DOI:——
日期:——
Unexpected result in the reaction of 3-amino-3-thioxopropanamides with 2-anilinomethylene derivatives of 1,3-dicarbonyl compounds. synthesis of pyrimidine-5-carboxamide derivatives
作者:V. V. Dotsenko、K. A. Frolov、S. G. Krivokolysko、V. V. Polovinko
DOI:10.1007/s10593-013-1266-5
日期:2013.6
interaction of 3-amino-3-thioxopropanamides with 2-anilinomethylene derivatives of dimedone, 1,3-cyclohexanedione and Meldrum’s acid led to the formation of 2-(2-amino-2-oxoethyl)-6-thioxo-1,6-dihydropyrimidine-5-carboxamides. The latter were alkylated in alkaline medium with the formation of 4-(alkylthio)pyrimidine-5-carboxamide derivatives.