Synthesis of N-substituted 4-trimethylstannyl-3,6-dihydro-2H-pyridines as promising synthons in the preparative chemistry of piperidine
作者:A. I. Moskalenko、V. I. Boev
DOI:10.1134/s1070363213120256
日期:2013.12
In this work, we synthesized previously unknown piperidine derivatives, N-substituted 4-trimethylstannyl3,6-dihydro-2H-pyridines I and II starting from preparatively available tert-butyl or benzyl 1,2,3,6-tetrahydro-4[(trifluoromethyl)sulfonyl]pyridine-1-carboxylates III, IV [3]. The latter react with hexamethyldistannane in the presence of catalyst systems Pd(PPh3)4–anhydrous LiCl [4] under reflux
在这项工作中,我们从可制备的叔丁基或苄基 1,2,3,6-四氢-4[(三氟甲基)磺酰基]吡啶-1-羧酸盐 III、IV [3]。后者在催化剂体系 Pd(PPh3)4-无水 LiCl [4] 的存在下与六甲基二锡烷在二恶烷中回流 1.5 小时,得到淡黄色油状物质 I 和 II,产率为 80-90%。DOI: 10.1134/S1070363213120256