An Efficient Three-component Tandem Reaction Leading to Pentacyclic Isoindole-fused Benzo[<i>b</i>,<i>e</i>][1,4]diazepines in Water
作者:Shu-Liang Wang、Chuang Cheng、Fei-Yue Wu、Jing Li、Bo Jiang、Shu-Jiang Tu
DOI:10.1246/cl.2011.834
日期:2011.8.5
An efficient methodology for the synthesis of highly functionalized pentacyclic isoindole-fused benzo[b,e][1,4]diazepine derivatives from readily available common reactants in water has been develo...
Microwave-assisted multi-component reaction in water leading to highly regioselective formation of benzo[f]azulen-1-ones
作者:Shu-Liang Wang、Chuang Cheng、Fei-Yue Wu、Bo Jiang、Feng Shi、Shu-Jiang Tu、Trideep Rajale、Guigen Li
DOI:10.1016/j.tet.2011.05.002
日期:2011.6
Microwave-assisted three-component reaction has been established for the regioselective synthesis of benzo[f]azulen-1-ones. The reaction was performed in aqueous media under microwave irradiation by using readily available and inexpensive starting materials. A total of 38 examples were examined to show a broad substrate scope and good overall yields (70-89%). The present new synthesis shows attractive green chemistry characteristics, such as the use of water as reaction media, concise one-pot conditions, short reaction periods (7-24 min), easy work-up/purification, and reduced waste production without the use of any strong acids or metal promoters. (C) 2011 Elsevier Ltd. All rights reserved.