Asymmetric hydroformylation catalyzed by homogeneous and polymer-supported platinum complexes containing chiral phosphine ligands
作者:Giovanni Parrinello、J. K. Stille
DOI:10.1021/ja00257a036
日期:1987.11
Hydroformylation de styrene, isobutyl-4styrene, vinyl-2 et methoxy-6 vinyl-2-naphtalenes, acetate de vinyle, methacrylate de methyle, norbornene, en presence de chlorure stanneux et en presence d'orthoformiate de triethyle
Easily Accessible and Highly Tunable Bisphosphine Ligands for Asymmetric Hydroformylation of Terminal and Internal Alkenes
作者:Kun Xu、Xin Zheng、Zhiyong Wang、Xumu Zhang
DOI:10.1002/chem.201304684
日期:2014.4.7
An efficient methodology for synthesizing a small library of easily tunable and sterically bulky ligands for asymmetric hydroformylation (AHF) has been reported. Five groups of alkene substrates have been tested with excellent conversions, moderate‐to‐excellent regio‐ and enantioselectivities. Among the best result of the reported literature, application of ligand 1 c in the highly selective AHF of
Highly Enantioselective Hydroformylation of Aryl Alkenes with Diazaphospholane Ligands
作者:Avery L. Watkins、Brian G. Hashiguchi、Clark R. Landis
DOI:10.1021/ol801723a
日期:2008.10.16
Asymmetric, rhodium-catalyzed hydroformylation of terminal and internal aryl alkenes with diazaphospholane ligands is reported. Under partially optimized reaction conditions, high enantioselectivity (>90% ee) and regioselectivities (up to 65:1 alpha:beta) are obtained for most substrates. For terminal alkenes, both enantioselectivity and regioselectivity are proportional to the carbon monoxide partial
Disclosed is a practical method for efficiently producing an alcohol compound by hydrogenating an aldehyde by using a homogeneous copper catalyst which is an easily-available low-cost metal species. Specifically disclosed is a method for producing an alcohol compound, which is characterized in that a hydrogenation reaction of an aldehyde compound is performed in the presence of a homogeneous copper catalyst and a diphosphine compound.
KetoABNO/NO<sub><i>x</i></sub> Cocatalytic Aerobic Oxidation of Aldehydes to Carboxylic Acids and Access to α-Chiral Carboxylic Acids via Sequential Asymmetric Hydroformylation/Oxidation
作者:Kelsey C. Miles、M. Leigh Abrams、Clark R. Landis、Shannon S. Stahl
DOI:10.1021/acs.orglett.6b01598
日期:2016.8.5
aerobic oxidation of aldehydes to carboxylicacids has been developed using organic nitroxyl and NOx cocatalysts. KetoABNO (9-azabicyclo[3.3.1]nonan-3-one N-oxyl) and NaNO2 were identified as the optimal nitroxyl and NOx sources, respectively. The mildness of the reaction conditions enables sequential asymmetric hydroformylation of alkenes/aerobic aldehyde oxidation to access α-chiral carboxylic acids