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%。