3,5-Dinitrobenzoic acid synthesis
- Product Name:3,5-Dinitrobenzoic acid
- CAS Number:99-34-3
- Molecular formula:C7H4N2O6
- Molecular Weight:212.12
Yield:99-34-3 65%
Reaction Conditions:
with Ti-mcm-41;ILTmCl4 in N,N-dimethyl-formamide at 110; under 18751.9 Torr; for 10 h;Autoclave;Reagent/catalyst;Temperature;Pressure;
Steps:
2-7 Example 2
Add meta-dinitrobenzene (10mmol), Ti-MCM-41(at)ILTmCl4 (0.35g), DMF (20mL) into the stainless steel autoclave, then seal the reactor, and introduce carbon dioxide to remove the air in the reactor. Keep the carbon dioxide pressure at 2.5 MPa, and stir and react at 110°C for 10 hours. After the reaction is over, the materials are cooled, the excess CO2 is slowly released, the catalyst is at the bottom of the kettle, and the upper liquid containing the product is separated by filtration. The solvent is recovered from the product phase of the filtrate, and the crude product is recrystallized with ethanol and dried to obtain 3,5-dinitrobenzoic acid with a yield of 65% and a content of 96.4% (see Figure 2 for HPLC).
References:
CN113620808,2021,A Location in patent:Paragraph 0037-0048
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