The Mannich reaction in the synthesis of N,S-containing heterocycles 12. First example of aminomethylation involving 2-thioxonicotinamide derivative: synthesis of 3,5,7,11-tetraazatricyclo[7.3.1.02,7]tridec-2-ene-9-carboxamides
作者:V. V. Dotsenko、S. G. Krivokolysko、V. P. Litvinov
DOI:10.1007/s11172-012-0019-4
日期:2012.1
Piperidinium 6-amino-5-cyano-3-N-(4-methylphenyl)carbamoyl-4-phenyl-1,4-dihydro-pyridine-2-thiolate upon the action of primary amines and excess formaldehyde undergoes aminomethylation to form 3,5,7,11-tetraazatricyclo[7.3.1.02,7]tridec-2-ene-9-carboxamides in 36–52% yields.
6-amino-5-cyano-3-N-(4-methylphenyl)carbamoyl-4-phenyl-1,4-dihydro-pyridine-2-thiolate 哌啶在伯胺和过量甲醛的作用下发生氨基甲基化反应,生成 3,5,7,11-四氮杂三环[7.3.1.02,7]十三-2-烯-9-甲酰胺,产率为 36-52%。