3-Bromophthalic anhydride synthesis
- Product Name:3-Bromophthalic anhydride
- CAS Number:82-73-5
- Molecular formula:C8H3BrO3
- Molecular Weight:227.01
3034-79-5
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82-73-5
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Yield:82-73-5 96%
Reaction Conditions:
with acetic anhydride for 1 h;Reflux;
Steps:
1.2 Step (2):
Put M1 (3g) obtained in step (1) in acetic anhydride (5mL),The temperature is raised to reflux and the solid is dissolved,After 1 hour of heat preservation reaction, it will be cooled naturally,Add 20mL petroleum ether and cool to 0,Stir and crystallize,filter,The solid is washed with petroleum ether and dried,M2 was obtained (96% yield).
References:
CN112876403,2021,A Location in patent:Paragraph 0031; 0036-0038
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82-73-5
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