Stereoselective aldol coupling of α,β-acetylenic ketones promoted by MgI2
作者:Han-Xun Wei、Jiali Hu、David W. Purkiss、Paul W. Paré
DOI:10.1016/s0040-4039(02)02746-6
日期:2003.1
A highly stereoselective synthesis of (Z)-β-iodovinyl ketone has been achieved with the tandem formation of CC and CI bonds in a three-component reaction. This new catalysis utilizes MgI2 as a Lewis acid as well as an iodine source for a Michael-type addition. α,β-Acetylenicketone is initially converted to an active β-iodo allenolate intermediate and then can be attacked by a variety of aldehydes