^<31>P-Nuclear Magnetic Resonance Studies on Various N-Substituted Pyrrolidinebisphosphine-Rhodium Complexes to Clarify the N-Substituent Effect on Catalytic Asymmetric Hydrogenation

Hideo TAKEDA; Kiyoshi INOGUCHI; Shunji SAKURABA; Kazuo ACHIWA

doi:10.1248/cpb.40.224

Hideo TAKEDA, Kiyoshi INOGUCHI, Shunji SAKURABA, Kazuo ACHIWA

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Keywords: ^<31>P-NMR, rhodium-bisphosphine complex, N-substituted pyrrolidinebisphosphine, catalytic asymmetric hydrogenation, 2-methylene succinamic acid, phenacylamine derivative

JOURNAL FREE ACCESS

1992 Volume 40 Issue 1 Pages 224-226

DOI https://doi.org/10.1248/cpb.40.224

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Abstract

The N-substituent effect on the enantioselectivity and the catalytic activity of the rhodium complexes of pyrrolidinebisphosphine ligands, PPMs and CPMs, was examined by means of hydrogenation studies and ³¹P-nuclear magnetic resonance spectral analysis.

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