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.
                            描述了一类源自苯并[h]
喹啉的新型
配体,并利用这些
配体制备了几种新型过渡
金属配合物。这些配合物优选为第VIII族过渡
金属
铁、
钌或
锇,其中苯并[h]
喹啉配体作为三齿
配体。所描述的配合物证明是非常有效的催化剂,用于通过氢转移和氢化反应将酮和醛还原为醇。因此,这些化合物可以有效地用作上述还原反应的催化剂。