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CAS No. : | 69951-02-6 | MDL No. : | MFCD01313703 |
Formula : | C7H7ClN2O2 | Boiling Point : | - |
Linear Structure Formula : | - | InChI Key : | HVPVUAIKGOKEEE-UHFFFAOYSA-N |
M.W : | 186.60 | Pubchem ID : | 2733460 |
Synonyms : |
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Signal Word: | Warning | Class: | N/A |
Precautionary Statements: | P280-P305+P351+P338 | UN#: | N/A |
Hazard Statements: | H317-H319 | Packing Group: | N/A |
GHS Pictogram: |
* 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 |
---|---|---|
90% | 2-Chloro-4-nitro-6-methylaniline (55.0 g, 0.295 mol) and ethanol (500 ml) were mixed in a 2 litter four-neck flask. A conc. Sulfuric acid (120 ml) was added dropwise to the reaction mixture at a temperature being lower than room temperature. The reaction mixture was maintained at a temperature of 5 to 10 ° C. and an aqueous solution of sodium nitrite (26.44 g, 0.381 mol/40 ml) was added dropwise thereto over a period of 40 minutes. The reaction mixture was then stirred at room temperature. It was observed that the temperature elevated up to 45 ° C. by way of the reaction heat and then decreases down to lower than 40 ° C. and then the reaction mixture was stirred at a temperature of 40 to 45 ° C. until no foaming. The product mixture was cooled to room temperature and poured into 2500 ml of iced water to obtain precipitates. They were filtered and dried at a reduced pressure to obtain 45.95 g of a yellow solid (production yield 90%). 1H-NMR, 500 MHz, in CDCl3 (delta) 8.03 (bs, 1H), 7.94 (bs, 1H), 7.50 (bs, 1H), 2.46 (s, 3H) |