Allyl‐Transition Metal Systems

Abstract

Abstract As a continuation of a report published in 1963, recent results in the field of allyl‐transition metal complexes are described The term “allyl compounds” in the present paper refers not only to compounds containing the simple allyl group (CH 2 CHCH 2 ), but also to those that contain substituted allyl groups or allyl groups forming part of a ring system. . Syntheses and reactions of these compounds, as well as the bonding between metal and allyl group, are discussed. Allyl‐transition metal complexes form the basis of extremely selective catalysts for homogeneous reactions of 1, 3‐diolefins and of olefins; the metal atoms in these “matrix” catalysts are either “bare” The description “bare” is applied to complexed metal atoms from which the ligands can be quantitatively displaced by the substances taking part in catalytic reactions. or are bound to only a few ligands.