Synthesis and Cyclization Reaction of 2-(Hydroxyimino)alkyl<i>N,N</i>-Dialkylthiocarbamates,<i>S</i>-[2-(Hydroxyimino)alkyl]<i>O</i>-Methyl Dithiocarbonate, and Alkyl 2-(Hydroxyimino)alkyl Trithiocarbonates
作者:Masaru Ishida、Kiyoshi Ichikawa、Masahiko Asano、Hirofumi Nakanishi、Shinzi Kato
DOI:10.1055/s-1987-27940
日期:——
2-(Hydroxyimino)alkyl dialkyldithiocarbamates and alkyl 2-(hydroxyimino)alkyl trithiocarbonates react with tosyl isocyanate as dehydrating agent to give bis(4-isothiazolyl) disulfides in moderate yields. However, treatment of S-[2-(hydroxyimino)phenylethyl] O-methyl dithiocarbonate with tosyl isocyanate affords a novel heterocycle 3-phenyl-4H-1,5,2-oxathiazine-6-thione, in 49% yield.
2-(羟基亚氨基)烷基二烷基二硫代氨基甲酸酯和 2-(羟基亚氨基)烷基三硫代碳酸酯与异氰酸甲苯酯作为脱水剂发生反应,生成二(4-异噻唑基)二硫化物,产率中等。然而,S-[2-(羟基亚氨基)苯基乙基] O-甲基二硫代碳酸酯与异氰酸对甲苯酯处理后,可得到一种新型杂环 3-苯基-4H-1,5,2-氧硫杂嗪-6-硫酮,产率为 49%。