Title:
光学活性カルボン酸の製造方法
Document Type and Number:
Japanese Patent JPWO2003074464
Kind Code:
A1
Abstract:
The invention provides a process for producing optically active 2, 2-dimethylcyclopropanecarboxylic acid by reacting an optical isomer mixture of 2,2-dimethylcyclopropanecarboxylic acid with an optically inactive amine to form (precipitate, crystallize or the like) an ammonium salt of optically active 2,2-dimethylcyclopropanecarboxylic acid, for example, optically active (S)-(+)-2,2-dimethylcyclopropanecarboxylic acid. The production (optical resolution, separation of an optically active substance, purification of an optically active substance or the like) of optically active 2, 2-dimethylcyclopropanecarboxylic acid which is important as an intermediate for production of agricultural chemicals, medications and the like can easily be conducted at low cost. Further, the invention provides an intermediate therefor (an ammonium salt of optically active 2,2-dimethylcyclopropanecarboxylic acid, especially preferably an ammonium salt of optically active (S)-(+)-2,2-dimethylcyclopropanecarboxylic acid, or the like), and an optical resolution agent (optically inactive amine) for separation of optically active 2,2-dimethylcyclopropanecarboxylic acid.
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Inventors:
谷田貝 正宣
箕村 雅史
土屋 重勝
箕村 雅史
土屋 重勝
Application Number:
JP2003572936A
Publication Date:
June 30, 2005
Filing Date:
March 04, 2003
Export Citation:
Assignee:
味の素株式会社
International Classes:
C07C51/41; C07C51/02; C07C51/43; C07C51/487; C07C61/04