Asymmetric Transfer Hydrogenation of Arylidene-Substituted Chromanones and Tetralones Catalyzed by Noyori-Ikariya Ru(II) Complexes: One-Pot Reduction of C═C and C═O bonds.

Guilherme S Caleffi Juliana de O C Brum Angela T Costa Jorge L O Domingos Paulo R R Costa

Published in: The Journal of organic chemistry (2021)

3-Arylidenechroman-4-ones and 2-arylidene-1-tetralones are hydrogenated to cis-benzylic alcohols in dr's and er's up to 99:1 via a C═C and C═O one-pot reduction in the presence of 2-5 mol % Noyori-Ikariya-type RuII chiral complexes and HCO2Na as a hydrogen source under asymmetric transfer hydrogenation-dynamic kinetic resolution (ATH-DKR) conditions. The oxidation of theses substrates resulted in the enantioselective synthesis of the natural homoisoflavanone dihydrobonducellin and its carba-analogues.

Keyphrases

molecular docking
electron transfer
room temperature
hydrogen peroxide
ionic liquid
capillary electrophoresis
editorial comment
mass spectrometry
endoplasmic reticulum
nitric oxide
molecular dynamics simulations
quantum dots