The mannich reaction in the synthesis of N,S-containing heterocycles 4. Aminomethylation of 6-amino-3,5-dicyano-1,4-dihydropyridine-2-thiolates: A convenient regioselective route to 3,5,7,11-tetraazatricyclo[7.3.1.02,7]tridec-2-ene derivatives
作者:V. V. Dotsenko、S. G. Krivokolysko、A. N. Chernega、V. P. Litvinov
DOI:10.1007/s11172-007-0158-1
日期:2007.5
Treatment of N-methylmorpholinium 4-R-6-amino-3,5-dicyano-1,4-dihydropyridine-2-thiolates (R = 2-ClC6H4 and 2-MeOC6H4) with primary amines in the presence of an excess of formaldehyde gave 13-R-8-thioxo-3,5,7,11-tetraazatricyclo[7.3.1.02,7]tridec-2-ene-1,9-dicarbonitrile derivatives in high yields (66–95%). In a similar way, aminomethylation of 3-R-10-amino-7,11-dicyano-9-aza-3-azoniaspiro[5.5]undeca-7
在过量甲醛存在下用伯胺处理 N-甲基吗啉 4-R-6-氨基-3,5-二氰基-1,4-二氢吡啶-2-硫醇盐(R = 2-ClC6H4 和 2-MeOC6H4)以高产率 (66–95%) 得到 13-R-8-thioxo-3,5,7,11-四氮杂三环 [7.3.1.02,7]tridec-2-ene-1,9-dicarbonitrile 衍生物。以类似的方式,3-R-10-amino-7,11-dicyano-9-aza-3-azoniaspiro[5.5]undeca-7,10-diene-8-thiolates (R = Me and Et) 的氨甲基化得到1'-烷基-8-硫代螺[3,5,7,11-四氮杂三环[7.3.1.02,7]tridec-2-ene-13,4'-哌啶]-1,9-二甲腈,产率 43–91% . 或者,这些化合物是通过 N-烷基哌啶-4-酮、氰硫代乙酰胺、伯胺和甲醛水溶液的多组分环缩合反应获得的。起始的