Rhodium-catalyzed branched-selective alkyne hydroacylation: a ligand-controlled regioselectivity switch.

It's all in the ligand: By choice of the appropriate diphosphine ligand a previously linear-selective alkyne hydroacylation process can be "switched" to be highly branched-selective (see scheme, l=linear, b=branched). Structural data for the ortho-iPr-dppe-rhodium catalyst suggest res...

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Bibliographic Details
Main Authors: González-Rodríguez, C, Pawley, R, Chaplin, AB, Thompson, A, Weller, A, Willis, M
Format: Journal article
Language:English
Published: 2011
Description
Summary:It's all in the ligand: By choice of the appropriate diphosphine ligand a previously linear-selective alkyne hydroacylation process can be "switched" to be highly branched-selective (see scheme, l=linear, b=branched). Structural data for the ortho-iPr-dppe-rhodium catalyst suggest restricted rotation of the phosphine aryl units may be responsible for the observed selectivity. Copyright © 2011 WILEY-VCH Verlag GmbH and Co. KGaA, Weinheim.