4.3 Article

1-Substituted-imidazo[1,5-a]pyridin-3-ylidenes as Highly Efficient Ligands for Rh- and Ir-catalyzed Transfer Hydrogenation of Carbonyl Compounds

Journal

CHEMISTRY LETTERS
Volume 45, Issue 11, Pages 1327-1329

Publisher

CHEMICAL SOC JAPAN
DOI: 10.1246/cl.160740

Keywords

N-heterocyclic carbene (NHC); Transfer hydrogenation; Rhodium

Funding

  1. JSPS KAKENHI [16K05769]
  2. Grants-in-Aid for Scientific Research [16K05769] Funding Source: KAKEN

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The transfer hydrogenation of carbonyl compounds catalyzed by Rh and Ir complexes bearing 1-substituted-imidazo[1,5-a]pyridin-3-ylidene ligands is reported. These catalysts, especially the Rh catalyst, showed high efficiency for the reaction. Comparison of the reaction profiles of several conventional Rh-NHC and -phosphine complexes with the present system revealed that the present catalytic system offers several advantages, and clearly showed greater efficiency than the other systems.

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