3-Nitrophthalic anhydride synthesis
- Product Name:3-Nitrophthalic anhydride
- CAS Number:641-70-3
- Molecular formula:C8H3NO5
- Molecular Weight:193.11
603-11-2
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641-70-3
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Yield:641-70-3 98.9%
Reaction Conditions:
with thionyl chloride;N,N-dimethyl-formamide in cyclohexane at 5 - 10; for 3.83333 h;Reflux;Vilsmeier Reaction;Time;Reagent/catalyst;Solvent;Temperature;
Steps:
2 Example 2
3-Nitrophthalic acid (20 g, 94.7 mmol), cyclohexane (50 mL), catalyst DMF was added to the reaction flask.(0.5 mL); cool to 5 ° C with an ice bath, add thionyl chloride (16.8 g, 0.15 mmol) dropwise, stir the reaction at 10 ° C for 50 min, addThe temperature was raised by heating and reacted under reflux for 3 h. After the reaction was completed, the solvent n-heptane was recovered under reduced pressure. The product is dried by infrared light and light greenThe color solid was 3-nitrophthalic anhydride 18.1 g, and the yield was 98.9%.
References:
CN108727319,2018,A Location in patent:Paragraph 0021; 0023; 0024; 0026; 0028; 0030; 0033
88-99-3
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641-70-3
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86-57-7
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641-70-3
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85-44-9
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641-70-3
397 suppliers
$6.00/5g