The Reaction of Cyanothioformamide with Isocyanates − Formation of a Disulfide by Reduction of a Thiocarbonyl Group
作者:Roger Ketcham、Ernst Schaumann、Gunadi Adiwidjaja
DOI:10.1002/1099-0690(200105)2001:9<1695::aid-ejoc1695>3.0.co;2-0
日期:2001.5
The reactions of the title compounds are governed by sulfur redox chemistry. Thus, cyanothioformamide 2 reacts with aryl isocyanates 3a−c to give bis[3-aryl-1-(arylcarbamoyl)-2-oxo-4-(arylcarbamoylimino)imidazolidin-5-yl] disulfides 6, as shown by an X-ray crystallographic investigation of product 6a. Reaction with methyl isocyanate (3d) gives the related trisulfide 7d along with disulfide 6d. A desulfurized
标题化合物的反应由硫氧化还原化学控制。因此,氰硫甲酰胺 2 与芳基异氰酸酯 3a-c 反应生成双 [3-芳基-1-(芳基氨基甲酰基)-2-氧代-4-(芳基氨基甲酰基亚氨基)咪唑啉-5-基]二硫化物 6,如 X 射线所示产品6a的晶体学研究。与异氰酸甲酯 (3d) 反应得到相关的三硫化物 7d 和二硫化物 6d。脱硫产物咪唑啉酮 10 也可以从异氰酸甲酯反应中分离出来,并通过 X 射线衍射分析进行表征。在沸腾的乙醇中,6a 和 7d 进行还原脱硫,分别得到 4-iminoimidazolidin-2-one 11a 和甲基类似物 11d。