Substituent effect on the diastereoselectivity in the chelation-controlled radical reactions of γ-(p-substituted-benzyloxy)-α-methylene esters with alkyl iodides
作者:Tomoko Yajima、Kyoko Okada、Hajime Nagano
DOI:10.1016/j.tet.2004.05.020
日期:2004.6
A pronounced substituent effect on the diastereoselectivity in the chelation controlled radicalreactions of ethyl γ-(p-substituted-benzyloxy)-α-methylenecarboxylates with alkyliodides was observed. The syn-selectivity increased in the order of electron-donating ability NO2