ChemicalBook >?? ???? >2-?????-4-???????
2-?????-4-???????
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2-?????-4-??????? ??
- ???
- 62-65°C
- ?? ?
- 234°C/15mmHg(lit.)
- ??
- 1.164±0.06 g/cm3(Predicted)
- ???
- ???? ???
- ??? ??
- powder to crystal
- ?? ?? (pKa)
- 8.05±0.35(Predicted)
- ??
- White to Yellow to Green
- ?? ??(λmax)
- 375nm(MeOH (pH 11))(lit.)
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- ?? ? ???? ?? (GHS)
?? ???? ?? | 36/37/38 | ||
---|---|---|---|
????? | 26-36/37/39 | ||
WGK ?? | 3 | ||
HS ?? | 2914.50.3000 |
2-?????-4-??????? C??? ??, ??, ??
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Preparation by Friedel–Crafts acylation of m-cresol,? with benzoic acid in the presence of boron trifluoride at 160° for 2 h (94%) or in the presence of Amberlyst-15 in refluxing chlorobenzene for 65 h (37%) ;
? with benzoyl chloride in the presence of aluminium chloride at 75°, in nitrobenzene at 60° for 18 h (8%) or with titanium tetrachloride in the same conditions (17%).
2-?????-4-??????? ?? ?? ? ???
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2-?????-4-??????? ?? ??
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2-?????-4-??????? ?? ??:
4-?????? 2-????-5-?????? ??? ??? ???? ???? ??
FRANGULIN A
Rhein
Emodin
Emodin-3-methyl ether
Hypericin
5-CHLORO-2-HYDROXY-4-METHYLBENZOPHENONE
FRANGULIN B
Chrysophanic acid
SENNIDINE A
CATENARIN
ISLANDICIN
CYNODONTIN
2'-CHLORO-2-HYDROXY-5-METHYLBENZOPHENONE
2',5-DICHLORO-2-HYDROXY-4-METHYLBENZOPHENONE