Regio- and diastereoselective conjugate addition of Grignard reagents to aryl substituted α,β-unsaturated carbonyl compounds derived from Oppolzer's sultam
作者:Xiufang Cao、Fang Liu、Wenchang Lu、Gang Chen、Guang-Ao Yu、Sheng Hua Liu
DOI:10.1016/j.tet.2008.04.048
日期:2008.6
Asymmetric conjugate addition of Grignard reagents to aryl substituted α,β-unsaturatedcarbonylcompounds (1) has been achieved with great regioselectivity (>20:1) and good to excellent diastereoselectivity (de up to 98%). The nucleophilicity and stereospecific blockade of the Grignard reagents play a key role in controlling the regioselectivities and diastereoselectivities of the conjugate addition