Rapid, one-pot synthesis of α,α-disubstituted primary amines by the addition of Grignard reagents to nitriles under microwave heating conditions
作者:Brian T. Gregg、Kathryn C. Golden、John F. Quinn、Hong-Jun Wang、Wei Zhang、Ruifang Wang、Francis Wekesa、Dmytro O. Tymoshenko
DOI:10.1016/j.tetlet.2009.04.081
日期:2009.7
A series of α,α-disubstituted amines have been prepared in a simple and efficient one-pot procedure by the addition of Grignard reagents to a series of aliphatic, aromatic, and heteroaromatic nitriles. Key to this reported procedure is the unprecedented addition of the Grignard reagent to the nitrile under heating by microwave irradiation which both significantly improves reaction yields and reduces
通过将格氏试剂添加到一系列脂族,芳族和杂芳族腈中,以简单有效的一锅法制备了一系列α,α-二取代胺。该报道方法的关键是在微波辐射加热下,将格氏试剂前所未有地添加到腈中,这既显着提高了反应产率,又缩短了反应时间。通常,格利雅(Grignard)加成反应在100°C下5-10分钟内完成,然后用硼氢化钠快速还原,得到目标胺。