Studies of Acyl and Thioacyl Isocyanates. IX. The Cycloaddition Reactions of Benzoyl and Thiobenzoyl Isocyanates with Anils
作者:Otohiko Tsuge、Shuji Kanemasa
DOI:10.1246/bcsj.45.2877
日期:1972.9
Thiobenzoyl isocyanates react with benzylidenanilines, benzylidenalkylamines and dianils to yield the corresponding mono- and bis (4+2) cycloadducts. Benzoylisocyanates do not react with benzylidenanilines, but they are easily added to benzylidenebenzylamine to give the (4+2) cycloadducts in good yields. Cycloaddition of these isocyanates to anils is dependent upon the basicity of the nitrogen atom