发明名称 |
1-hydroxypyrazole-4-carboxylic acid |
摘要 |
1-Hydroxypyrazole-4-carboxylic acid is prepared by heating an alkali metal of alkaline earth metal salt of 1-hydroxypyrazole, or a mixture of 1-hydroxypyrazole with an alkali metal or alkaline earth metal carbonate or bicarbonate, at from 120 DEG to 250 DEG C. for from 1 to 40 hours under a CO2 pressure of 20-300 bar, and is used for the preparation of pharmacologically useful compounds.
|
申请公布号 |
US4769473(A) |
申请公布日期 |
1988.09.06 |
申请号 |
US19860901583 |
申请日期 |
1986.08.29 |
申请人 |
BASF AKTIENGESELLSCHAFT |
发明人 |
BOEHM, HEINRICH;RIEBER, NORBERT |
分类号 |
B01J27/00;B01J27/232;C07B61/00;C07D231/14;(IPC1-7):C07D231/14 |
主分类号 |
B01J27/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|