Cyclization of .ALPHA.- and .BETA.-alkylthio-substituted amines possessing positively charged carbon at the nitrogen. A new synthetic method for thiazolidines, thiomorpholines and dihydro-1,4-benzothiazines.
作者:YOSHIHARU ISHIKAWA、YOSHIYASU TERAO、KUNIO SUZUKI、NOBORU SHIKANO、MINORU SEKIYA
DOI:10.1248/cpb.32.438
日期:——
The present paper describes the finding that α- and β-alkylthio-substituted amines possessing a positively charged carbon such as =CHPh, CO2R and CH2SR at the nitrogen undergo cyclization in the presence of lithium diisopropylamide or sodium hydride leading to thiazolidines, thiomorpholines and dihydro-1, 4-benzothiazines.
本文介绍了在二异丙基酰胺锂或氢化钠存在下,α- 和 β-烷硫基取代的胺在氮上具有带正电荷的碳,如 =CHPh、CO2R 和 CH2SR,会发生环化反应,生成噻唑啉类、硫代吗啉类和二氢-1,4-苯并噻嗪类化合物。