PBu<sub>3</sub>-Mediated Vinylogous Wittig Reaction of α-Methyl Allenoates with Aldehydes and Mechanistic Investigations
作者:Silong Xu、Rongshun Chen、Zhengjie He
DOI:10.1021/jo201466k
日期:2011.9.16
A highly stereoselective PBu3-mediated vinylogous Wittigolefination between α-methyl allenoates and a variety of aldehydes is presented as the first example of a practical and synthetically useful vinylogous Wittig reaction. Mechanistic experiments including deuterium-labeling, intermediate entrapment, and NMR monitoring have been deliberately conducted. On the basis of mechanistic investigations