A new class of ligands derived from benzo[h]quinoline are described and these ligands are used to prepare several novel transition metal complexes. The complexes are preferably of the group VIII transition metals iron, ruthenium or osmium, with the benzo[h]quinoline ligands acting as tridentate ligands. The complexes described are proved to be very active catalysts for the reduction of ketones and aldehydes to alcohols, via hydrogen transfer and hydrogenation reactions. These compounds hence can be usefully employed as catalysts in said reduction reactions.
本文描述了一种新型的苯并[h]
喹啉配体,并利用这些
配体制备了几种新型的过渡
金属配合物。这些配合物通常由VIII族过渡
金属
铁、
钌或
锇组成,其中苯并[h]
喹啉配体作为三齿
配体。所述的配合物被证明是催化酮和醛还原为醇的非常活跃的催化剂,通过氢转移和氢化反应实现。因此,这些化合物可以作为还原反应中有用的催化剂。