Synthesis of 3-aryl substituted benzo[1,2,5]triazepin-4-ones via intramolecular imine formation
作者:Mirosław J. Tomaszewski、Luc Boisvert、Shujuan Jin
DOI:10.1016/j.tetlet.2009.01.064
日期:2009.4
3-Aryl substitutedbenzo[1,2,5]triazepin-4-ones and their pyrido counterparts have been synthesized in five steps from commercially available starting materials. The key step involves base-induced cleavage of trifluoroacetyl-protected hydrazine intermediates and in situ intramolecular imine formation.