Regiospecific iodocyclization of S-allyl dithiocarbamates: synthesis of 2-imino-1,3-dithiolane and 2-iminium-1,3-dithiolane derivatives
摘要:
4-Alkyl-2-imino-1,3-dithiolanes and 4-alkyl-2-iminium-1,3-dithiolanes were prepared in excellent yields with complete regiospecificity under mild conditions by the iodocyclization of S-allyl dithiocarbamates. Dehydrohalogentaion of the 4-alkyl-2-imino-1,3-dithiolanes gave 4-alkylidene-2-imino-1,3-dithiolanes in excellent yields. (C) 2009 Elsevier Ltd. All rights reserved.
DOI:
10.1016/j.tetlet.2009.03.127
作为产物:
描述:
二甲胺 、 四氢呋喃 、 二硫化碳 、 1-氯-2-丁烯 在
甲苯 、 盐酸 、 水 作用下,
以
水 为溶剂,
反应 4.0h,
以to obtain 10.2 gr of the desired product的产率得到crotyl-N,N-dimethyldithiocarbamate