Alkyne and Reversible Nitrile Activation:<i>N</i>,<i>N</i>′-Diamidocarbene-Facilitated Synthesis of Cyclopropenes, Cyclopropenones, and Azirines
作者:Jonathan P. Moerdyk、Christopher W. Bielawski
DOI:10.1021/ja3014105
日期:2012.4.11
diamidocyclopropenes by combining an isolable and readily accessible N,N'-diamidocarbene (DAC) with a range of alkynes (nine examples, 68-97% yield). Subsequent hydrolysis of selected cyclopropenes afforded the corresponding cyclopropenones or α,β-unsaturated acids, depending on the reaction conditions. In addition, the combination of a DAC with alkyl or aryl nitriles was found to form 2H-azirines in a reversible