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Communication | Regular issue | Vol 31, No. 8, 1990, pp.1413-1416
Published online, 1st January, 1970
DOI: 10.3987/COM-90-5427
Preparation of Newly Modified DIOP Bearing Bis(4-dimethylamino-3,5-dimethylphenyl)phosphino Groups and Its Application to Efficient Asymmetric Hydrogenation of Itaconic Acid Derivatives

Kiyoshi Yoshikawa, Kiyoshi Inoguchi, Toshiaki Morimoto, and Kazuio Achiwa*

*Schol of Pharmaceutical Sciences, University of Shizuoka, 395 Yada, Shizuoka 422-8526, Japan

Abstract

We prepared a modified DIOP analogue bearing bis(4-dimethylamino-3,5-dimethylphenyl)phosphinogroups. Its rhodium complex was found to be a useful catalyst for asymmetric hydrogenation of dimethyl itaconate and itaconic aicd derivatives bearing β-aryl goups.