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CAS No. : | 5900-13-0 | MDL No. : | MFCD08275726 |
Formula : | C5H6BrN3O | Boiling Point : | - |
Linear Structure Formula : | - | InChI Key : | QDFJJHGAODFQMN-UHFFFAOYSA-N |
M.W : | 204.03 | Pubchem ID : | 11344724 |
Synonyms : |
|
Signal Word: | Warning | Class: | N/A |
Precautionary Statements: | P261-P305+P351+P338 | UN#: | N/A |
Hazard Statements: | H302-H315-H319-H335 | 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 |
---|---|---|
54% | With dmap; at 20℃; for 3h;Inert atmosphere; | To a stirring solution of 5-bromo-3-methoxypyrazin-2-amine (1.50 g, 7.35 mmol) in pyridine (15 mL), DMAP (15 mg, 0.12 mmol) and <strong>[163295-70-3](3,5-dichlorophenyl)methanesulfonyl chloride</strong> (1.91 g, 7.34 mmol) was added. The reaction was left stirring at room temperature under nitrogen for 2 hrs. A further addition of <strong>[163295-70-3](3,5-dichlorophenyl)methanesulfonyl chloride</strong> (0.20 g, 0.77 mmol) was added to the reaction mixture which was then left stirring for 1 hr at room temperature. The reaction mixture was concentrated in vacuo resulting in a viscous orange mixture which was then diluted with EtOAc (100 mL), washed with water (2 x 80 mL), the organic layer was dried over Na2S04 and concentrated in vacuo to afford an orange solid. This was dissolved in EtOAc (30 mL) and acidified with HCl (2M, 20 mL) which resulted in the precipitation of the title compound as a white solid . The organic and aqueous layer were subsequently separated, the organic layer was washed with water (3 x 30 mL), dried over Na2S04 and concentrated in vacuo to afford a second crop of the title compound as an orange solid (combined yield 1.73g, 54%); H NMR (500 MHz, DMSO) δ 3.93 (s, 3H), 4.88 (s, 2H), 7.36 (d, 2H), 7.63 (m, 1H), 8.12 (s, 1H), 10.80 (s, 1H). |
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