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 substituted benzo[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.
3-芳基取代的苯并[1,2,5]三氮杂-4--酮及其吡啶对应物已由市售起始原料分五步合成。关键步骤涉及碱基诱导的三氟乙酰基保护的肼中间体的裂解和原位分子内亚胺的形成。