Diastereoselective reactions of 1 4-bis(bromomagnesio)pentane with lactones and cyclic anhydrides
作者:P. Canonne、R. Boulanger、M. Bernatchez
DOI:10.1016/s0040-4020(01)80084-3
日期:1989.1
the stereochemical control of the intramolecular Grignard reaction can be attributed to the chelation between the groups in ortho position of the intermediate oxoalkyl magnesium compound. The alkoxy and the carboxylate seem to have an opposite effect. Furthermore, reactions of 1, 4-bis(bromomagnesio)pentane with non-aromatic cyclicanhydrides yield preferentially the trans diastereoisomer.