A Facile Synthesis of 2-Aza-1,3-butadienes

Article abstract of DOI:10.1246/bcsj.64.766

2-Aza-1,3-butadienes bearing alkoxyl substituent were obtained easily by the reaction of ketimines with orthoesters.The reaction proceeded smoothly by the addition of small amount of p-toluenesulfonic acid.When acetals were used in place of orthoesters, t