ChemicalBook CAS DataBase List 3,3',4,5'-Tetrahydroxystilbene

3,3',4,5'-Tetrahydroxystilbene synthesis

3synthesis methods

Product Name:3,3',4,5'-Tetrahydroxystilbene
CAS Number:4339-71-3
Molecular formula:C14H12O4
Molecular Weight:244.24

Benzene, 4-[2-(3,5-dimethoxyphenyl)ethenyl]-1,2-dimethoxy-

20767-18-4
0 suppliers
inquiry

4339-71-3
2 suppliers
inquiry

Yield:4339-71-3 64.3%

Reaction Conditions:

with aluminum (III) chloride;triethylamine in chlorobenzene at 50 - 85; for 4 h;Temperature;

Steps:

3.3

at room temperature, dry 500 ml in the reaction of four, inputs paradichlorbenzene 60 ml, triethylamine 60g, slowly adding anhydrous alchlor 84g, suck, temperature 50 °C, batch input the cedar is mellow tetramethoxyl Euonymus 14.3g, temperature adding 85 °C reaction 4h, TLC detection, raw material the reaction is complete, the liquid slowly poured into 5% hydrochloric acid aqueous solution, stirring 2h, filtering, washing, cedar mellow thick to obtain brown Euonymus 15.6g, 15% of the methanol aqueous solution refined and get excellent 9.2g, yield 64.3%.

References:

CN105439824,2016,A Location in patent:Paragraph 0021; 0039

6652-32-0 Synthesis

6652-32-0
114 suppliers
$25.00/250mg

4339-71-3
2 suppliers
inquiry

References

705-76-0
311 suppliers
$10.00/1g

4339-71-3
2 suppliers
inquiry

References