2-Chloro-4,5-dinitro-benzoic acid synthesis
- Product Name:2-Chloro-4,5-dinitro-benzoic acid
- CAS Number:33458-98-9
- Molecular formula:C7H3ClN2O6
- Molecular Weight:246.56
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Yield:33458-98-9 95%
Reaction Conditions:
with sulfuric acid;nitric acid at 90; for 0.666667 h;
Steps:
87
Intermediate 87 :2-chloro-4,5-dinitrobenzoic acid; To 95% sulfuric acid (40 mL) was added red fuming nitric acid (6 mL, 144 mmol) followed by 2-chloro-4-nitrobenzoic acid (10.0 g, 49.6 mmol). The suspension was heated to 90 0C for 40 min. The reaction mixture was allowed to cool and then quenched with ice- water (400 mL), The suspension was filtered and washed with water to give 2-chloro-4,5- dinitrobenzoic acid (11.6 g, 95 %) as a solid. Used crude.
References:
WO2009/47558,2009,A1 Location in patent:Page/Page column 163
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