A Comparison Between Oxazoline-imidazolinylidene -imidazoylidine - benzimidazoylidine Hydrogenations Catalysts

摘要

Imidazolinylidene, imidazoylidine, benzimidazoylidine complexes >1a – c were prepared and tested in asymmetric hydrogenations of a series of largely unfunctionalized alkenes. Similarities and differences in the catalytic performance of these complexes were rationalized in terms of the predicted mechanisms of these reactions, and their relative tendencies to generate protons under the hydrogenation conditions.