ChemicalBook >?? ???? >2,2'3,4,4'-???????????
2,2'3,4,4'-???????????
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2,2'3,4,4'-??????????? ??
- ???
- 187–188°C
- ?? ?
- 541.5±50.0 °C(Predicted)
- ??
- 1.641±0.06 g/cm3(Predicted)
- ?? ?? (pKa)
- 7.07±0.40(Predicted)
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2,2'3,4,4'-??????????? C??? ??, ??, ??
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Preparation by reaction of 2,3,4-trihydroxybenzoic acid with resorcinol,? in the presence of zinc chloride and phosphorous oxychloride at 70–80° for 1.5 h (65%) ;
? in the presence of zinc chloride and a mixture of polyphosphoric acid/85% phosphoric acid (60:40) at 27°. Then, during 2h, phosphorous trichloride was added between 27° and 37° and the mixture heated at 60° for 16h.
2,2'3,4,4'-??????????? ?? ?? ? ???
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2,2'3,4,4'-??????????? ?? ??
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2,2'3,4,4'-??????????? ?? ??:
2,3,4-??????????? 2,4,4'-????????????
2,2'-DIHYDROXYBENZOPHENONE
2,2',4,4'-Tetrahydroxybenzophenone
2,3,4,4'-TETRAHYDROXYDIPHENYLMETHANE
MACLURAXANTHONE
2,3,4-TRIHYDROXYDIPHENYLMETHANE
2,2'3,4,4'-PENTAHYDROXY BENZOPHENONE
2,3,4,4'-Tetrahydroxybenzophenone
5,6-dimethoxysterigmatocystin
2,3',4,4'-TETRAHYDROXYBENZOPHENONE
4,4'-Dihydroxybenzophenone