Asymmetric induction in Diels-Alder reactions of o-quinodimethanes
作者:James L. Charlton
DOI:10.1016/s0040-4039(00)98651-9
日期:1985.1
Asymmetric inductive effects have been measured on the Diels-Alderreaction of dimethyl fumarate with o-quinodimethane bearing a chiral α-alkoxy group. The chiral substituents used were 1-phenylethoxy, 2-(1-phenyl)propoxy, 1-(2-phenyl)propoxy, 2-(4-phenyl)-butoxy and 1-cyclohexylethoxy. The greatest asymmetricinduction was found with the first of these chiral substituents (47% ee). A π-stacking effect