作者:Monica Nardi、Annalisa Cozza、Loredana Maiuolo、Manuela Oliverio、Antonio Procopio
DOI:10.1016/j.tetlet.2011.06.029
日期:2011.9
Condensation reactions of o-phenylenediamine and 2 equiv of acetone produce biaryl-substituted 1, 5-benzodiazepines. The synthetic protocol shows general applicability since similar reaction of o-phenylenediamines, o-aminophenol, and o-aminothiophenol with ketones or chalcones leads to formation of functionalized 1,5-benzoheteroazepines in good to excellent yields. The synthetic protocol fulfills many green-chemical requirements using simple MW-assistance to promote the activation of ketones and the eco-compatible Er(III) triflate as activator of chalcones. (C) 2011 Elsevier Ltd. All rights reserved.