发明名称 |
Process for preparing cyclopropanecarboxylates of lower alcohols |
摘要 |
Cyclopropanecarboxylates of lower alcohols are prepared by esterification of the corresponding cyclopropanecarboxylic acids with the corresponding lower alcohols in the presence of an acid catalyst, while maintaining a considerable stoichiometric excess of the cyclopropanecarboxylic acid with respect to the lower alcohol, keeping the temperature at from 100 to 200° C. and distilling off the cyclopropanecarboxylate together with the water of reaction and small amounts of alcohol. Cyclopropanecarboxylates of lower alcohols are valuable intermediates in the pharmaceutical and agrochemical sectors.
|
申请公布号 |
US6730804(B1) |
申请公布日期 |
2004.05.04 |
申请号 |
US19980141163 |
申请日期 |
1998.08.27 |
申请人 |
DEGUSSA AG |
发明人 |
KAUFHOLD MANFRED;FELD MARCEL |
分类号 |
B01J27/02;B01J31/10;C07B61/00;C07C67/08;C07C69/74;(IPC1-7):C07C69/74 |
主分类号 |
B01J27/02 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|