Ruthenium-iodo-optically active phosphine complex
申请(专利)号：
EP19990401120
申请日期：
1999-05-07
公开/公告号：
EP0955303A2
公开/公告日期：
1999-11-10
申请(专利权)人：
TAKASAGO INTERNATIONAL CORPORATION
被引量：
摘要：
This invention is concerned with a ruthenium-iodo-optically active bidentate phosphine complex of the formula (I): [Ru-(I)-(T)(SOL)(L)](T)(I)(I) wherein T' represents a carboxylic acid anion, SOL represents a polar solvent, L represents an optically active bidentate phosphine ligand, T represents an anion different from halogen atom anions and carboxylic acid anions, n denotes 0 or 1, r denotes 0, 3 or 4, m denotes 1 or 2, q denotes 0 or 1, or where m is 2 q may represent 1 or 1.5, p denotes 0 or 1, and s denotes 0, 1 or 2 is prepared. Said phosphine complex is usefull as an efficient catalyst for asymmetrically hydrogenating 4-methylene-2-oxetanone into optically active 4-methyl-2-oxetanone.
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