FIELD: production of halogen- containing bis-phenols. SUBSTANCE: the process comprises reacting 2,2-bis-(4-hydroxyphenyl) propane with bromine in the presence of water, a 30% aqueous solution of hydrogen peroxide with a solvent such as methylene chloride. 2 moles of bromine per 1 mole of 2,2-bis(4- hydroxyphenyl) propane are added to the aqueous mixture. EFFECT: improved preparation process.
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Year |
Author |
Number |
| 1R,3S-2,2- DIMETHYL -3(2-METHYL -2- OXYPROPYL) -CYCLOPROPANECARBONITRILE AS INTERMEDIATE COMPOUND IN SYNTHESIS OF PYRETHROIDE INSECTICIDE - DELTAMETRINE AND METHOD FOR PRODUCING INTERMEDIATE COMPOUND |
1989 |
- Rukavishnikov A.V.
- Tkachev A.V.
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RU1679760C |
| METHOD OF SYNTHESIS OF 2,2-BIS-(3',5'-DIBROMO-4'-HYDROXYPHENYL)-PROPANE |
1991 |
- Goberman S.I.
- Krishtal' V.S.
- Kolesnichenko N.Ja.
- Kudrjashova T.V.
- Neljubin B.V.
- Rilo R.P.
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RU2026280C1 |
| METHOD OF SYNTHESIS OF 2,2-BIS-(3,5-DIBROMO-4-HYDROXYPHENYL)-PROPANE |
1994 |
- Komkova Ju.F.
- Kostina G.S.
- Ochneva V.A.
- Popov L.K.
- Tishchenko A.M.
- Tudorovskij Eh.L.
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RU2064918C1 |
| 1S,3R - 2,2 - DIMETHYL -3(2-METHYL -2- OXYPROPYL) -CYCLOPROPANECARBONITRILE AS INTERMEDIATE COMPOUND IN SYNTHESIS OF PYRETHROID INSECTICIDE OF DELTAMETRINE AND METHOD FOR PRODUCTION OF INTERMEDIATE COMPOUND |
1989 |
- Rukavishnikov A.V.
- Tkachev A.V.
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RU1679761C |
| METHOD OF SYNTHESIS CHLOROAZINES CONTAINING O-HYDROXYPHENYL GROUP |
1991 |
- Krivopalov V.P.
- Nikolaenkova E.B.
- Mamaev V.P.
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RU2026295C1 |
| METHOD OF SYNTHESIS OF 3-ALKOXYCARBONYL-4-HYDROXY-2-METHYL-2H- -1,2-BENZOTHIAZINE-1,1-DIOXIDES |
1993 |
- Medvedeva A.S.
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RU2109738C1 |
| METHOD OF SYNTHESIS OF MERCAPTANES COMPRISING STERIC HINDRANCE PHENOL FRAGMENTS |
2000 |
- Krysin A.P.
- Mashkina A.V.
- Knjazev V.V.
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RU2184727C2 |
| PROCESS FOR PREPARING 1R, 3S-2,2-DIMETHYL-3-(2- OXOPROPYL)CYCLOPROPANEACETONITRILE |
1989 |
- Rukavishnikov A.V.
- Tkachev A.V.
- Volodarskij L.B.
- Pentegova V.A.
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RU1689376C |
| METHOD OF PREPARING 1,4,4a,9a-TETRAHYDROANTHRAQUINONE |
1995 |
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RU2095341C1 |
| PROCESS OF UTILIZATION OF YPERITE |
1993 |
- Trofimov B.A.
- Gusarova N.K.
- Dorofeev I.A.
- Khil'Ko M.Ja.
- Dolenko G.N.
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RU2039039C1 |
