[EN] METHOD FOR INCREASING THE ENANTIOMERIC EXCESS OF CHIRAL PHOSPHINE OXIDES, SULPHIDES, IMIDES AND BORANES<br/>[FR] PROCÉDÉ POUR AUGMENTER L'EXCÈS ÉNANTIOMÉRIQUE DES OXYDES, DES SULFURES, ET DES IMIDES DE PHOSPHINE AINSI QUE DES PHOSPHINE-BORANES CHIRAUX
申请人:CELTIC CATALYSTS LTD
公开号:WO2010004278A1
公开(公告)日:2010-01-14
The present invention relates to a method for increasing the enantiomeric excess of a chiral phosphine oxide, a chiral phosphine sulphide, a chiral phosphine-borane and a chiral phosphine imide said method comprising the steps of: (a) contacting said chiral phosphine oxide, sulphide, imide or borane with a solvent to form a slurry; (b) partitioning the phosphine oxide, sulphide, imide or borane either into the solvent or as an insoluble product; and (c) optionally, isolating the partitioned phosphine oxide, sulphide, imide or borane.
selenoxides having an opticallyactive binaphthyl skeleton work as the reagents for enantioselective oxidation of phosphines to the correspondingphosphineoxides. Treatment of a racemic 2-oxazolin-2-ylferrocenylphosphine with one of the selenoxides in carbon tetrachloride in the presence of phenol affords the correspondingphosphineoxide together with the unreacted starting phosphine, both with moderate
具有旋光联萘骨架的环状硒氧化物用作将膦对映选择性氧化成相应氧化膦的试剂。在苯酚的存在下,用四氯化碳中的一种氧化硒处理外消旋 2-恶唑啉-2-基二茂铁基膦,得到相应的氧化膦和未反应的起始膦,两者都具有中等对映选择性(氧化膦,高达 13% ee ; 膦,高达 29% ee)。
A process for the stereoselective preparation of a P-chiral four-co-ordinated phosphorus compound, the process comprising reacting a first reactant selected from the group consisting of a chiral alcohol, chiral amine or chiral thiol, with a second reactant comprising a P-chiral three-co-ordinated phosphorus compound, in the presence of an electrophile.
A Novel Resolution Procedure for the Preparation of P-Stereogenic Phosphine Oxides
作者:Neil G. Andersen、Philip D. Ramsden、Daqing Che、Masood Parvez、Brian A. Keay
DOI:10.1021/ol991174s
日期:1999.12.1
[GRAPHICS]A new general route for preparing enantiomerically pure P-stereogenic phosphine oxides has been developed by exploiting the Staudinger reaction between racemic tertiary phosphines and an enantiomerically pure organoazide. The resulting phosphinimines are easily resolved by either crystallization or flash chromatography and serve as synthetic intermediates toward enantiomerically pure phosphine oxides.
LIENNE, M.;MACAUDIERE, P.;CAUDE, M.;ROSSET, R.;TAMRUTE, A., CHIRALITY, 1,(1989) N, C. 45-56
作者:LIENNE, M.、MACAUDIERE, P.、CAUDE, M.、ROSSET, R.、TAMRUTE, A.