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CAS No. : | 869557-43-7 | MDL No. : | MFCD03092924 |
Formula : | C5H4BrFN2 | Boiling Point : | - |
Linear Structure Formula : | - | InChI Key : | KXSQMCRVUAALNE-UHFFFAOYSA-N |
M.W : | 191.00 | Pubchem ID : | 16126434 |
Synonyms : |
3-Bromo-5-fluoro-2-pyridinamine
|
Signal Word: | Warning | Class: | N/A |
Precautionary Statements: | P261-P305+P351+P338 | UN#: | N/A |
Hazard Statements: | 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 |
---|---|---|
1,1'-bis-(diphenylphosphino)ferrocene; tris-(dibenzylideneacetone)dipalladium(0); In DMF (N,N-dimethyl-formamide); at 120℃; for 0.666667h;Microwave heating; | In a microwave vessel was combined 3-bromo-5-fluoropyridin-2-amine (2.0 g, 0.0105 mmol), Zn (CN)2 mg), DPPF (25 mg), and 5 mL wet DMF. The solution was then purged with N2(g) prior to the addition of Pd2dba (20 mg). The reaction was heated at 120 C for 40 mins in a microwave reactor. Crude material was purified by flash silica column to yield 570 mg solid yellow product, MS (M+H) = 138, H NMR (300 MHz, DMSO-D6) 8 ppm 6.86 (s, 2 H) 7.98 (dd, J=8.29, 3.01 Hz, 1 H) 8.26 (d, J=3.01 Hz, 1 H). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
0.59 g of copper(I) cyanide was added to a mixture of 1.04 g of the 2-amino-3-bromo-5-fluoropyridine and 20 ml of N-methyl-2-pyrrolidone, and the obtained mixture was stirred at 150C for 5 hours. Thereafter, 28% aqueous ammonia was added to the reaction mixture, and it was then extracted with ethyl acetate. The organic layer was washed with a saturated saline solution, and it was then dried over anhydrous sodium sulfate, followed by concentration under reduced pressure. The obtained residue was subjected to silica gel column chromatography, so as to obtain 0.52 g of 2-amino-3-cyano-5-fluoropyridine.2-amino-3-cyano-5-fluoropyridine [Show Image] 1H-NMR (CDCl3) delta: 5.10 (2H, br s), 7.45 (1H, dd, J = 7.4, 3.0 Hz), 8.16 (1H, d, J = 3.0 Hz). |
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