2-Amino-6-bromobenzoic acid
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2-Amino-6-bromobenzoic acid
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CAS No:
20776-48-1
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Formula:
C7H6BrNO2
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Chemical Name:
2-Amino-6-bromobenzoic acid
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Synonyms:
2-Amino-6-bromobenzoic acid;BP11632-amino-6-bromobenzoicacid;2-Amino-6-bromobenzoic acid 97%;3-Bromo-2-carboxyaniline, 6-Bromoanthranilic acid;6-BroMoanthranilic Acid;2-Nitro-5-broMobenzoic acid;20776-48-1;2-AMino-6-broMobenzoic
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CAS No:
Safety Information
IRRITANT
Xi
P261, P264, P271, P280, P302+P352, P304+P340, P305+P351+P338, P312, P321, P332+P313, P337+P313, P362, P403+P233, P405, P501
H315
2-Amino-6-bromobenzoic acid Use and Manufacturing
Commercially available 4-bromoisatin (2.50 g, 11.1 mmol) was dissolved in a 1.5 mol/L sodium hydroxide aqueous solution (20 mL), and 33percent hydrogen peroxide water (1 mL) was dropped at 55°C. After being stirred at 55°C for 30 minutes, the reaction mixture was cooled to room temperature, neutralized with 2.0 mol/L hydrochloric acid, and purified with HP-20 resin to give 2-amino-6-bromobenzoic acid (1.60 g, 67percent).Preparation of 5-bromoquinazolin-4(3H)-one: (0511) [00217] To a solution of General procedure: To a solution of compound 4 (1.0 mmol) and various substituted anthranilic acid (1.0 mmol) in DMF (5 ml) were added DIEA (2.0 mmol) and PyBOP (1.1 mmol). The mixture was stirred continuously for 2 h at room temperature. The reaction was monitored by TLC. After the reaction was finished, the mixture was poured into ice water, and then extracted with ethyl acetate (3 × 20 ml). The organic phases were combined, washed with saturated aqueous sodium chloride solution (2 × 30 ml), dried over anhydrous Na2SO4 and evaporated under reduced pressure to get crude compound 5a-z. The crude products were directly proceeded to the next step.
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