发明名称 |
Process for the preparation of diesters of phosphonocarboxylic acid derivatives |
摘要 |
The addition of acid diesters of phosphorous acid onto alpha,beta-unsaturated carboxylic acid derivatives under basic catalysis is achieved with good yields if it is carried out in the presence of alkali metal alcoholates or phenolates and in the presence of halides, oxides or hydroxides of divalent metals. Co-use of these metal compounds allows relatively small mounts of metal alcoholates or phenolates to be used. The resulting reaction mixtures do not contain relatively large amounts of troublesome by-products.
|
申请公布号 |
US5648509(A) |
申请公布日期 |
1997.07.15 |
申请号 |
US19950508145 |
申请日期 |
1995.07.27 |
申请人 |
CIBA-GEIGY CORPORATION |
发明人 |
DERMEIK, SALMAN;WANNER, MARTINA;LEMMER, KARL-HEINZ;BRAUN, REINHOLD |
分类号 |
B01J21/10;B01J23/02;B01J27/10;B01J31/02;C07B61/00;C07F9/40;(IPC1-7):C07F9/02 |
主分类号 |
B01J21/10 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|