发明名称 |
Process for the preparation of (phenoxy- or benzyl-)-phenoxypropionic acids and their alkali metal salts |
摘要 |
Process for the preparation of (phenoxy- or benzyl-)-phenoxypropionic acids and the alkali metal salts thereof by adding a double molar amount of an aqueous alkali hydroxide to a boiling mixture of a (benzyl- or phenoxy-)-phenol and 2-chloropropionic acid (ester), with simultaneous azeotropic distillation of the water introduced or formed in the reaction.
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申请公布号 |
US4552977(A) |
申请公布日期 |
1985.11.12 |
申请号 |
US19820422712 |
申请日期 |
1982.09.24 |
申请人 |
HOECHST AKTIENGESELLSCHAFT |
发明人 |
KOCH, MANFRED;HERBRECHTSMEIER, PETER |
分类号 |
C07C51/367;(IPC1-7):C07C79/46 |
主分类号 |
C07C51/367 |
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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