6,8-Dibromoisatoic anhydride synthesis
- Product Name:6,8-Dibromoisatoic anhydride
- CAS Number:54754-60-8
- Molecular formula:C8H3Br2NO3
- Molecular Weight:320.92
Yield:54754-60-8 73.5%
Reaction Conditions:
in tetrahydrofuran at 20;
Steps:
13 Example 13: Preparation of 6,8-dibromo-1H-benzo [d] [1,3] oxazine-2,4-dione
14.5 g (0.05 mol) of 2-amino-3,5-dibromobenzoic acid,30ml of tetrahydrofuran into 100ml single-necked flask with stirring magnet,After stirring to dissolve the solid,Solid phosgene 4.5 g (0.015 mol) was added,The reaction was stirred at room temperature for 1 ~ 2h,After a large number of brown solid material precipitation,After removing the solvent,Add saturated aqueous sodium bicarbonate and stir for 1 h,The solid was filtered and washed with water to obtain 11.8 g (36.7 mmol) ofYield 73.5%.
References:
CN106317016,2017,A Location in patent:Paragraph 0068; 0069
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