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Communication | Regular issue | Vol 9, No. 11, 1978, pp.1539-1543
Published online, 1st January, 1970
DOI: 10.3987/R-1978-11-1539
Effective Catalytic Asymmetric Synthesis of R-(—)-Pantolactone with Polymer Supported Chiral Pyrrolidinephosphine-Rhodium Complexes

Kazuo Achiwa*

*Faculty of Pharmaceutical Sciences, University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113, Japan

Abstract

The syntheses of new polymer supported chiral pyrrolidine-phosphine ligands; 4VB-PPM-MMA (1) and 4VB-PPM-tBuMA (2) and their application to the asymmetric hydrogenation of keto-pantolactone were described. Thus, 4VB-PPM-MMA-Rh and 4VB- PPM-tBuMA-Rh gave R-(-)-pantolactone in 73.4 and 75.7% optical yield respectively.