发明名称 |
Preparation of optically active 2-halopropionic acids |
摘要 |
PCT No. PCT/EP96/00012 Sec. 371 Date Jan. 7, 1997 Sec. 102(e) Date Jan. 7, 1997 PCT Filed Jan. 4, 1996 PCT Pub. No. WO96/22272 PCT Pub. Date Jul. 25, 1996The present invention relates to a process for the preparation of optically active 2-halopropionic acids, in which the corresponding optically active alkyl 2-halopropionates are caused to react with a carboxylic acid at elevated temperature in a transacylation reaction with the formation of the optically active 2-halopropionic acid and the alkyl carboxylate, and the optically active 2-halopropionic acid obtained is separated from the reaction mixture. The optically active products produced are important intermediates for the preparation of plant protectants and pharmaceuticals.
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申请公布号 |
US5763659(A) |
申请公布日期 |
1998.06.09 |
申请号 |
US19970860085 |
申请日期 |
1997.07.01 |
申请人 |
BASF AKTIENGESELLSCHAFT |
发明人 |
MERKLE, HANS RUPERT;FRETSCHNER, ERICH;HANSEN, HANSPETER;ZIPPERER, BERNHARD |
分类号 |
C07B57/00;C07C51/09;C07C51/487;C07C53/19;(IPC1-7):C07C53/15 |
主分类号 |
C07B57/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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