Universität zu Köln

Demchuk, Oleg M., Arlt, Dieter, Jasinski, Radomir ORCID: 0000-0001-8555-6793 and Pietrusiewicz, K. Michal (2012). Relationship between structure and efficiency of atropisomeric phosphine ligands in homogeneous catalytic asymmetric hydrogenation. J. Phys. Org. Chem., 25 (11). S. 1006 - 1012. HOBOKEN: WILEY-BLACKWELL. ISSN 0894-3230

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Abstract

A relationship between the structure of biaryl atropisomeric diphosphine ligands and their efficiency in model rhodium catalyzed asymmetric catalytic hydrogenation reactions have been studied with an attempt to separate the two main factors influencing the performance of the ligand in the catalyst core namely, the steric and the electronic factors. A series of new biaryl atropisomeric bisphosphines with only one substituent varied in its electron-donating versus electron-withdrawing ability placed in a position that should in principle not affect the ligand conformation was designed and synthesized for this purpose. Screening of these ligands in model rhodium catalyzed asymmetric hydrogenations revealed that both yields and especially optical purities of the obtained products are in a clear-cut relationship with the nature of the single substituent varied in the ligand structure. Copyright (c) 2012 John Wiley & Sons, Ltd.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Demchuk, Oleg M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Arlt, Dieter UNSPECIFIED UNSPECIFIED UNSPECIFIED Jasinski, Radomir UNSPECIFIED orcid.org/0000-0001-8555-6793 UNSPECIFIED Pietrusiewicz, K. Michal UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-480099
DOI:	10.1002/poc.2998
Journal or Publication Title:	J. Phys. Org. Chem.
Volume:	25
Number:	11
Page Range:	S. 1006 - 1012
Date:	2012
Publisher:	WILEY-BLACKWELL
Place of Publication:	HOBOKEN
ISSN:	0894-3230
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language ENANTIOSELECTIVE HYDROGENATION; COMPLEXES; BIPHENYLBISPHOSPHINE; BINAP Multiple languages Chemistry, Organic; Chemistry, Physical Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/48009