ES432472A1 - 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
- ES432472A1 ES432472A1 ES432472A ES432472A ES432472A1 ES 432472 A1 ES432472 A1 ES 432472A1 ES 432472 A ES432472 A ES 432472A ES 432472 A ES432472 A ES 432472A ES 432472 A1 ES432472 A1 ES 432472A1
- Authority
- ES
- Spain
- Prior art keywords
- radical
- group
- general formula
- formula
- preparation
- 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
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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, if B stands for 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 stands for the hydroxy group, ketone thioacetals of the general formula II are hydrolyzed **(See formula)** wherein the radical R1 is as defined above and the radicals R8 and R9 represent lower alcohol radicals, which may be the same or different from each other or together with the group (See formula) they can form a 5-, 6- or 7-membered ring, which may eventually be interrupted by another sulfur atom; and the optionally obtained ra-cemates 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 they transform according to methods customary in their esters or 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)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES432472A ES432472A1 (en) | 1974-11-30 | 1974-11-30 | Procedure for the preparation of new derivatives of bifenilo. (Machine-translation by Google Translate, not legally binding) |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES432472A ES432472A1 (en) | 1974-11-30 | 1974-11-30 | Procedure for the preparation of new derivatives of bifenilo. (Machine-translation by Google Translate, not legally binding) |
Publications (1)
Publication Number | Publication Date |
---|---|
ES432472A1 true ES432472A1 (en) | 1976-11-16 |
Family
ID=8468109
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES432472A Expired ES432472A1 (en) | 1974-11-30 | 1974-11-30 | Procedure for the preparation of new derivatives of bifenilo. (Machine-translation by Google Translate, not legally binding) |
Country Status (1)
Country | Link |
---|---|
ES (1) | ES432472A1 (en) |
-
1974
- 1974-11-30 ES ES432472A patent/ES432472A1/en not_active Expired
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