The Dyson Perrins Laboratory, South Parks Road, Oxford, OX1 3QY, U.K.
Abstract:
The asymmetric synthesis of trans-substituted cyclopropanecarboxylic acid derivatives is achieved via stereoselective nucleophilic methylene transfer to E-,β-unsaturated acyl ligands bound to the iron chiral auxiliary [(η5-C5H5)Fe(CO)(PPh3)].