ES8605216A1 - Di:methyl di:methyl-phenoxy valeric acid and salts - Google Patents
Di:methyl di:methyl-phenoxy valeric acid and saltsInfo
- Publication number
- ES8605216A1 ES8605216A1 ES549469A ES549469A ES8605216A1 ES 8605216 A1 ES8605216 A1 ES 8605216A1 ES 549469 A ES549469 A ES 549469A ES 549469 A ES549469 A ES 549469A ES 8605216 A1 ES8605216 A1 ES 8605216A1
- Authority
- ES
- Spain
- Prior art keywords
- methyl
- valeric acid
- salts
- dimethyl
- phenoxy
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Abstract
2,2-Dimethyl 5- (2,5-dimethyl phenoxy) valeric acid is made by (a) reacting 1-bromo 3-(2,5-dimethyl phenoxy)propane with an alkyl methyl malonate CH3CH(COOR)2, in which R is methyl or ethyl in presence of sodium alkoxide and the corresp. alcohol; (b) hydrolysing with aq. alkali metal hydroxide at b.pt. and acidifying; (c) treating with lithium diisopropylamide in molar ratio 1:2 in THF soln; (d) methylating the Li salt obtd in alpha-posn. to the COOH gp by treatment with methyl chloride, bromide or iodide; and (e) acid hydrolysis of the prod.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES549469A ES8605216A1 (en) | 1985-12-02 | 1985-12-02 | Di:methyl di:methyl-phenoxy valeric acid and salts |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES549469A ES8605216A1 (en) | 1985-12-02 | 1985-12-02 | Di:methyl di:methyl-phenoxy valeric acid and salts |
Publications (2)
Publication Number | Publication Date |
---|---|
ES8605216A1 true ES8605216A1 (en) | 1986-03-16 |
ES549469A0 ES549469A0 (en) | 1986-03-16 |
Family
ID=8490337
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES549469A Expired ES8605216A1 (en) | 1985-12-02 | 1985-12-02 | Di:methyl di:methyl-phenoxy valeric acid and salts |
Country Status (1)
Country | Link |
---|---|
ES (1) | ES8605216A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES2036438A1 (en) * | 1990-05-11 | 1993-05-16 | Egyt Gyogyszervegyeszeti Gyar | Process for the preparation of 2,2-dimethyl-5-(2,5-dimethyl-phenoxy)-pentanoic acid, intermediates for preparing this compound and process for preparing the intermediates |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105693504B (en) * | 2014-11-29 | 2020-11-10 | 康普药业股份有限公司 | Preparation method of gemfibrozil |
-
1985
- 1985-12-02 ES ES549469A patent/ES8605216A1/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES2036438A1 (en) * | 1990-05-11 | 1993-05-16 | Egyt Gyogyszervegyeszeti Gyar | Process for the preparation of 2,2-dimethyl-5-(2,5-dimethyl-phenoxy)-pentanoic acid, intermediates for preparing this compound and process for preparing the intermediates |
Also Published As
Publication number | Publication date |
---|---|
ES549469A0 (en) | 1986-03-16 |
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