1,2-difluoro-4,5-dinitrobenzene synthesis
- Product Name:1,2-difluoro-4,5-dinitrobenzene
- CAS Number:85686-97-1
- Molecular formula:C6H2F2N2O4
- Molecular Weight:204.09
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Yield:85686-97-1 70.1%
Reaction Conditions:
with sulfuric acid;nitric acid at 90; for 1.5 h;Temperature;
Steps:
1-8 Example 8:
Drop 6.4 mL of 98percent fuming nitric acid into 32 mL of 98percent concentrated sulfuric acid at room temperature.Stirring was continued, keeping the temperature below 50°C, and then 1.59 g of 3,4-difluoronitrobenzene was dropped into the mixed acid dropwise. The nitration solution was slowly heated to 90°C for 1.5h.After the reaction, pour the nitrated liquid into 10 times the volume of ice water, stir and filter,After washing and drying, 1.43 g of 1,2-difluoro-4,5-dinitrobenzene was obtained, with a yield of 70.1percent.
References:
Beijing University Of Science And Technology Chongqing Chuangxin Center;Beijing Institute of Technology;Li Yunlu;He Chunlin;Yin Ping;Pang Siping CN111269126, 2020, A Location in patent:Paragraph 0026-0041
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