Mannich reaction in the synthesis of N,S-containing heterocycles. 15*. Multicomponent cascade synthesis of 3,4,6a,7,8,9,10,10a-octahydro-2H,6H-pyrimido[4',5':4,5]pyrido[2,1-b][1,3,5]thia(selena)-diazine derivatives
作者:K. A. Frolov、V. V. Dotsenko、S. G. Krivokolysko
DOI:10.1007/s10593-013-1173-9
日期:2013.1
4E)-2-cyano-5-phenylpenta-2,4-dienethio(seleno)amides with formaldehyde and primary aromatic amines gives 3,8,10-trisubstituted 6-phenyl-3,4,6a,7,8,9,10,10a-octahydro-2H,6H-py-rimido[4',5':4,5]pyrido[2,1-b][1,3,5]thia(selena)diazine-11-carbonitriles. The latter were also obtained by a multicomponent condensation of cinnamaldehyde, cyanothioacetamide, formaldehyde, and anilines in the presence of catalytic amounts
(2E,4E)-2-氰基-5-苯基戊-2,4-二烯硫基(硒代)酰胺与甲醛和芳族伯胺的反应生成3,8,10-三取代的6-苯基-3,4,6a, 7,8,9,10,10a-八氢-2 H,6 H -py-rimido [4',5':4,5] pyrido [2,1- b ] [1,3,5] thia(selena )diazine-11-腈。后者也是在催化量的碱存在下,通过肉桂醛,氰基硫代乙酰胺,甲醛和苯胺的多组分缩合获得的。3,8,10-三(4-甲基苯基)-6-苯基-3,4,6a,7,8,9,10,10a-八氢-2 H,6 H-嘧啶[4',通过X射线结构分析研究了5':4,5]吡啶[2,1- b ] [1,3,5]噻二嗪-11-腈。