cas 122708-97-8, BIS(3,5-DIMETHYL-4-METHOXYPHENYL)PHOSPHINE | Articles data ｜lookchem

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122708-97-8

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Catalyst-free alcoholysis of phosphane-boranes: a smooth, cheap, and efficient deprotection procedure
Catalyst-free alcoholytic deprotection of borane-protected phosphorus compounds offers a smooth, efficient, and clean alternative to existing deprotection methods. In this paper we report our results on the general applicability of deprotecting phosphane-
Van Overschelde, Michel,Vervecken, Elias,Modha, Sachin G.,Cogen, Simon,Van der Eycken, Erik,Van der Eycken, Johan
experimental part
p. 6410 - 6415
(2009/12/09)

Electronic and steric effects of ligands as control elements for rhodium-catalyzed asymmetric hydrogenation
Chiral diphosphine ligands analogous to bdpp have been synthesized and tested in order to study the effect of the electronic nature of the ligands in Rh-catalyzed asymmetric hydrogenation of some prochiral olefins. The results are compared with those obtained with the analogous unsubstituted ligand (bdpp). The rhodium-catalyzed asymmetric hydrogenation of olefins was influenced by ligand-based electronic effects, as well as substrate based ones. Excellent ee's (up to 98.3%) have been obtained in the rhodium-catalyzed hydrogenation of (Z)-α-acetamidocinnamic acids and esters.
Herseczki, Zsanett,Gergely, Ildiko,Hegedues, Csaba,Szoellosy, Aron,Bakos, Jozsef
p. 1673 - 1676
(2007/10/03)

Rhodium-catalyzed asymmetric 1,4-addition of organoboron reagents to 5,6-dihydro-2(1H)-pyridinones. Asymmetric synthesis of 4-aryl-2-piperidinones
Catalytic asymmetric synthesis of 4-aryl-2-piperidinones was realized for the first time by asymmetric 1,4-addition of arylboron reagents to 5,6-dihydro-2(1H)-pyridinones in the presence of a chiral bisphosphine-rhodium catalyst. In the reaction introduci
Senda,Ogasawara,Hayashi
p. 6852 - 6856
(2007/10/03)

HIGHLY EFFICIENT ASYMMETRIC HYDROGENATION OF ITACONIC ACID DERIVATIVES CATALYZED BY A MODIFIED DIOP-RHODIUM COMPLEX
A modified DIOP analogue bearing 4-methoxy and 3,5-dimethyl groups on each phenyl group has been synthesized.The rhodium complex of the ligand has been found to give very high optical yields in the asymmetric hydrogenation of itaconic acid and its derivatives bearing β-aryl groups, the products of which are key-intermediates for optically active lignan derivatives.
Morimoto, Toshiaki,Chiba, Mitsuo,Achiwa, Kazuo
p. 735 - 738
(2007/10/02)

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