The Dyson Perrins Laboratory, South Parks Road, Oxford, OX1 3QY, U.K.
Abstract:
The asymmetric synthesis of cis-substituted cyclopropanecarboxylic acid derivatives is achieved via stereoselective electrophilic methylene transfer to Z-,β-unsaturated acyl ligands bound to the iron chiral auxiliary (η5-C5H5Fe(CO)(PPh3)].