作者:Lidia S Konstantinova、Oleg A Rakitin、Charles W Rees、Sivaprasad Sivadasan、Tomás Torroba
DOI:10.1016/s0040-4020(98)00521-3
日期:1998.8
yield into the mono-imine 5i or the bis-imine 12, RH; thermolysis of 5i gives 2-cyanobenzimidazole in high yield. Conversion of 5 into 6 involves the loss of both sulfur atoms and with the N-phenylimino derivative 5b singlet diatomic sulfur, S2, has been intercepted with norbornene and with 2,3-diphenylbutadiene to give the expected cycloadducts 7 and 8.
N-单取代的1,2-二氨基苯4(RMe,Ph,PhCH 2和3,4-Me 2 C 6 H 3 CH 2)与4,5-二氯-1,2,3-二噻唑鎓盐1反应在室温下于二氯甲烷中得到相应的2-氰基苯并咪唑6。如果在反应开始时添加吡啶,则可以分离出中间体亚氨基-1,2,3-二噻唑5。在热分解时,大多数亚胺5以公平至良好的产率得到2-氰基苯并咪唑6。1,2-二氨基苯可以高收率转化为单亚胺5i或双亚胺12,RH;或 5i的热解以高产率得到2-氰基苯并咪唑。的转化5到6既包括硫原子,并与所述损失Ñ -苯基亚氨基衍生物5b中单峰双原子硫,S 2,已被截获与降冰片烯和2,3-二苯基丁二烯,得到预期cycloadducts 7和8。