Control of Transient Aluminum–Aminals for Masking and Unmasking Reactive Carbonyl Groups
作者:Francis J. Barrios、Brannon C. Springer、David A. Colby
DOI:10.1021/ol401265a
日期:2013.6.21
dimethylaluminum N,O-dimethylhydroxylamine complex, is effective at masking reactive carbonyl groups in situ from nucleophilic addition. This reagent allows chemoselective addition of reducing reagents, Grignard reagents, organolithiums, Wittig reagents, and enolates into substrates with multiple carbonyl groups. Moreover, the trapped carbonyl group, a stable aminal, can be unmasked in situ for additional synthetic
一种新的试剂,二甲基铝N,O-二甲基羟胺络合物,可有效地从亲核加成中原位掩盖反应性羰基。该试剂可将还原剂,格氏试剂,有机锂,维蒂希试剂和烯醇化物化学选择性地添加到具有多个羰基的底物中。而且,被捕获的羰基(稳定的氨基)可以原位解开,以进行其他合成操作。