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CAS No. : | 1645-96-1 | MDL No. : | MFCD02250294 |
Formula : | C7H3F2NO4 | Boiling Point : | - |
Linear Structure Formula : | - | InChI Key : | YCLXTFDBDIYVPZ-UHFFFAOYSA-N |
M.W : | 203.10 | Pubchem ID : | 21236553 |
Synonyms : |
|
Signal Word: | Danger | Class: | 6.1 |
Precautionary Statements: | P261-P302+P352 | UN#: | 2810 |
Hazard Statements: | H302+H312-H331 | Packing Group: | Ⅲ |
GHS Pictogram: |
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* All experimental methods are cited from the reference, please refer to the original source for details. We do not guarantee the accuracy of the content in the reference.
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
33.99% | With sulfuric acid; nitric acid; In dichloromethane; at 0℃; for 0.5h; | In a 1000 ml three-necked flask, add 300 ml of dichloromethane, 15.8 g (0.1 mol) of 2,2-difluorobenzo[d][1,3]dioxane, represented by the formula M-01, and cool to 0 C. ,Slowly add a mixture of 9.69 g (0.1 mol) of 65% nitric acid and 20.6 g of 98% sulfuric acid, add the reaction at 0 C for 30 minutes, add water. The organic layer was washed with water until neutral, separated by silica gel column chromatography, eluting with petroleum ether: ethyl acetate = 10:1 (volume ratio). 6.9 g of 2,2-difluoro-5-nitrobenzo[d][1,3]dioxane was obtained according to the formula M-02, and the yield was 33.99%. |
33.99% | With sulfuric acid; nitric acid; In dichloromethane; at 0℃; for 0.5h; | In a 1000 ml three-necked flask, add 300 ml of dichloromethane, 15.8 g (0.1 mol) of <strong>[1583-59-1]2,2-difluorobenzo[d][1,3]dioxolane</strong>, represented by the formula M-01, and cool to 0 C. ,A mixture of 9.69 g (0.1 mol) of 65% nitric acid and 20.6 g of 98% sulfuric acid was slowly added dropwise, and the reaction was kept at 0 C for 30 minutes.Add water solution, wash the organic layer to neutral, separate by silica gel column chromatography, elute with petroleum ether: ethyl acetate = 10:1 (volume ratio).6.9 g of 2,2-difluoro-5-nitrobenzo[d][1,3]dioxolane was obtained according to the formula M-02, and the yield was 33.99%. |
33.99% | With sulfuric acid; nitric acid; In dichloromethane; at 0℃; for 0.5h; | 1000 ml three-necked bottle, Add 300 ml of dichloromethane, 15.8 g (0.1 mol) of <strong>[1583-59-1]2,2-difluorobenzo[d][1,3]dioxole</strong>, as shown by formula M-01, Cool down to 0 C, A mixture of 9.69 g (0.1 mol) of 65% nitric acid and 20.6 g of 98% sulfuric acid was slowly added dropwise. The reaction was incubated at 0 C for 30 minutes. Add water, The organic layer is washed to neutral, Separated by silica gel column chromatography, Petroleum ether: ethyl acetate = 10:1 (volume ratio) elution, as shown by formula M-02 2,2-difluoro-5-nitrobenzo[d][1,3]dioxole 6.9 g, yield 33.99%. |
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