Novel Synthesis of Heterocyclic Ketene <i>N</i>,<i>N</i>-, <i>N</i>,<i>O-</i>, and <i>N</i>,<i>S</i>-Acetals Using Cyanoketene Dithioacetals
作者:Galal H. Elgemeie、Ahmed H. Elghandour、Ghada W. Abd Elaziz
DOI:10.1081/scc-120018927
日期:2003.1.6
A novel synthesis of (2,3-dihydrobenzoimidazole-2-ylidenyl)cyanoacetanilide, (2,3-dihydrobenzoxazole-2-ylidenyl)cyanoacetanilide and (2,3-dihydro-benzothiazole-2-ylidenyl)cyanoacetanilide derivatives 5a-1 via reaction of ketene dithioacetals 2a-d with o-phenylenediamine, o-aminophenol, and o-aminothiophenol 3a-c is reported and the synthetic potential of the method is demonstrated.