Dimerization of Cyclopropyl Ketones and Crossed Reactions of Cyclopropyl Ketones with Enones as an Entry to Five-Membered Rings
作者:Lei Liu、John Montgomery
DOI:10.1021/ja0602187
日期:2006.4.1
An unexpected dimerization of cyclopropylketones was observed, and analysis of the reaction pathway led to development of a synthetically useful crossed reaction between cyclopropylketones and enones to afford densely functionalized cyclopentane products.
Formation of Six-membered Aza-nickelacycles by Oxidative Addition of Cyclopropyl Imines to Nickel(0)
作者:Takashi Tamaki、Masato Ohashi、Sensuke Ogoshi
DOI:10.1246/cl.2011.248
日期:2011.3.5
Cyclopropyl imines reacted with nickel(0) in the presence of IPr to give the expected six-membered aza-nickelacycles confirmed by X-ray crystallography. The molecular structure of aza-nickelacyles shows monomeric η1-aza-nickelenolate structures. The reaction of aza-nickelacycle with an enone occurred to generate an η3-oxa-allylnickel complex.