The enantioselectivesynthesis of P-stereogenic chiral organophosphines under organocatalysis is a challenging research field, and reports that use this approach are rare. Herein, we have developed the enantioselectivesynthesis of P-stereogenic chiral oxazaphospholidines by using a bicyclic thiazole as the organocatalyst in the P–N and P–O bond-forming reaction. The P-chiral products were prepared
A practical and cost-effective synthetic method of P-chiral diarylalkyl, aryldialkyl, and triaryl phosphineoxides by using readily available chiral diphenyl-2-pyrrolidinemethanol as the auxiliary is developed. The long-standing racemization issue during solvolysis has been addressed and well controlled by employing a suitable solvent, a low reaction temperature, and an appropriate reaction time.
A novel displacement route to P-chiral phosphine oxides of high enantiomeric purity
作者:Cosimo Cardellicchio、Vito Fiandanese、Francesco Naso、Saverio Pacifico、Marek Koprowski、K. Michał Pietrusiewicz
DOI:10.1016/s0040-4039(00)73428-9
日期:1994.8
Reaction of (R)-(1-chlorovinyl)methylphenylphosphine oxide with aryl and alkenyl Grignardreagents result in highly stereoselective displacement of the halovinyl group and afford virtually enantiomerically pure arylmethylphenyl and alkenylmethylphenylphosphine oxides of inverted configuration at phosphorus.
The Reactions of Optically Pure Menthyloxymethylphenylphosphine-Borane with Organolithium Reagents
作者:Toshiyuki Oshiki、Tsuneo Imamoto
DOI:10.1246/bcsj.63.3719
日期:1990.12
The reactions of (Rp)-menthyloxymethyl-phenylphosphine-borane with several organolithiumreagents are described. Less sterically hindered reagents such as m-anisyllithium and p-anisyllithium react with the phosphine-borane to afford the corresponding substitution products with high stereochemical integrity with inversion of configuration. On the other hand, o-substituted phenyllithiums lead to products