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CAS No. : | 701910-14-7 | MDL No. : | MFCD09870049 |
Formula : | C8H7BrN2 | Boiling Point : | - |
Linear Structure Formula : | - | InChI Key : | KPAYIFGPJOYWMM-UHFFFAOYSA-N |
M.W : | 211.06 | Pubchem ID : | 21094580 |
Synonyms : |
|
Signal Word: | Warning | Class: | N/A |
Precautionary Statements: | P280-P305+P351+P338 | UN#: | N/A |
Hazard Statements: | H302 | 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 |
---|---|---|
45% | A mixture of <strong>[845751-59-9]7-bromoindazole</strong> (3; 576 mg, 2.92 mmol) and NaOH (510 mg, 12.7 mmol) in 15 mL H2O were heated in an oil bath under N2 atmosphere until the solids dissolved and the resulting solution was cooled to 65 C. Dimethyl sulfate (0.78 mL, 1.03 g, 8.18 mmol) was added and the mixture stirred at 65 for 2 hr. The reaction mixture was cooled to rt and extracted with CH2Cl2 (2×50 mL). The combined CH2Cl2 extracts were washed with brine and dried over Na2SO4. Evaporation ofthe solvent afforded 775 mg of a mixture of 1-methyl- and 2-methy-<strong>[845751-59-9]7-bromoindazole</strong>s which were separated by flash chromatography on SiO2 using EtOAc:hexane (1:2) which afforded 251 mg (45%) of 7-bromo-2-methylindazole (4). |
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