An expeditious catalyst-free cascade coupling of N,N-dibromoarylsulfonamides with isonitriles and amines via carbodiimide intermediates has been developed. The protocol represents an elegant pathway for sulfonyl guanidines at room temperature within a short time with high yields and wide substrate scope. The carbodiimide intermediate could also be isolated in an appreciable yield.
通过碳二
亚胺中间体,N,N-二
溴芳基磺酰胺与异腈和胺的快速无催化剂级联反应已得到开发。该方案代表了磺酰
胍在室温下短时间内具有高收率和广泛底物范围的绝佳途径。碳二
亚胺中间体也可以以可观的产率分离。