ES417792A1 - Procedure for the preparation of new derivatives of bifenilo. (Machine-translation by Google Translate, not legally binding) - Google Patents
Procedure for the preparation of new derivatives of bifenilo. (Machine-translation by Google Translate, not legally binding)Info
- Publication number
- ES417792A1 ES417792A1 ES417792A ES417792A ES417792A1 ES 417792 A1 ES417792 A1 ES 417792A1 ES 417792 A ES417792 A ES 417792A ES 417792 A ES417792 A ES 417792A ES 417792 A1 ES417792 A1 ES 417792A1
- Authority
- ES
- Spain
- Prior art keywords
- radical
- general formula
- group
- preparation
- formula
- 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
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- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Procedure for the preparation of new biphenyl derivatives of the general formula I, **(See formula)** wherein the radical R1 signifies a halogen atom and the radical B signifies the hydroxy group, an alkoxy or aralkoxy group or a group of the formula (see formula), in which R3 and R4, which may be the same or different from each other, represent hydrogen atoms, the carboxymethyl radical, a lower alcohol radical or a phenyl radical optionally substituted by a hydroxy or methyl group, and, in the case of that B means the hydroxy group, of its salts with organic or inorganic bases, characterized in that for the preparation of compounds of the general formula I, in which B means the hydroxy group, a compound of the general formula II is reacted **(See formula)** where R1 is as initially defined and X means the hydroxy group, a halogen atom or any acyloxy radical, with a 1,1-dihalogenoethylene in sulfuric acid, and the intermediate is hydrolyzed by the addition of water; and the eventually obtained racemates are split by fractional crystallization of their salts with optically active bases in their two optically active individual components, and if desired, compounds obtained of the general formula I, in which B is the hydroxy group, are transformed according to methods per se customary in their esters or in their salts by means of organic or inorganic bases or, if desired, for the preparation of compounds of the general formula I, in which B means the radical (see formula), a compound of the general formula I, in which B represents an alkoxy group or a halogen atom, is reacted with a primary or secondary amine at elevated temperatures. (Machine-translation by Google Translate, not legally binding)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2240441A DE2240441A1 (en) | 1972-08-17 | 1972-08-17 | NEW BIPHENYL DERIVATIVES AND METHOD OF MANUFACTURING |
DE19722261912 DE2261912A1 (en) | 1972-12-18 | 1972-12-18 | Antiphlogistic butyric acid derivs - 3-(halo-substd.-4-biphenylyl)-butyric acid derivs |
DE19732300402 DE2300402A1 (en) | 1973-01-05 | 1973-01-05 | Antiphlogistic butyric acid derivs - 3-(halo-substd.-4-biphenylyl)-butyric acid derivs |
Publications (1)
Publication Number | Publication Date |
---|---|
ES417792A1 true ES417792A1 (en) | 1976-03-01 |
Family
ID=27184645
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES417792A Expired ES417792A1 (en) | 1972-08-17 | 1973-08-11 | Procedure for the preparation of new derivatives of bifenilo. (Machine-translation by Google Translate, not legally binding) |
Country Status (1)
Country | Link |
---|---|
ES (1) | ES417792A1 (en) |
-
1973
- 1973-08-11 ES ES417792A patent/ES417792A1/en not_active Expired
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