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CAS No. : | 114080-94-3 | MDL No. : | MFCD13193315 |
Formula : | C6H5N3O | Boiling Point : | - |
Linear Structure Formula : | - | InChI Key : | YDWPZZKCLZOZDR-UHFFFAOYSA-N |
M.W : | 135.12 | Pubchem ID : | 13924712 |
Synonyms : |
|
Signal Word: | Warning | Class: | N/A |
Precautionary Statements: | P261-P280-P305+P351+P338 | UN#: | N/A |
Hazard Statements: | H302-H315-H319-H332-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 |
---|---|---|
41% | With potassium carbonate In N,N-dimethyl-formamide at 20℃; | Intermediate 1 : lsoxazolo[5,4-cipyridin-3-ylamine.; To a solution of 3-chloro-isonicotinitrile (1.13 g, 8.36 mmol) in DMF (6.0 mL) were added potassium carbonate (1.69 g, 12.2 mmol) and acetohydroxamic acid (0.91 g, 12.2 mmol). The reaction mixture was stirred at rt overnight, diluted with EtOAc (200 mL) and extracted with saturated aqueous NaHCO3 (200 mL) then saturated aqueous NaCI (100 mL). The aqueous layers were back extracted with EtOAc (200 mL) and the combined organic layers were dried (MgSO4) and concentrated. The crude residue was purified (FCC, 2 N NH3 in MeOH/DCM) to give isoxazolo[5,4-c]pyhdin-3-ylamine (0.447 g, 41 percent). MS (ESI+): calcd for C6H5N3O m/z 135.04, found 136.2 (M+H)+. 1H NMR (d6-DMSO): 8.93 (d, J = 0.8, 1 H), 8.45 (d, J = 5.2, 1 H), 7.88-7.86 (dd, J = 5.2, 1.2, 1 H), 6.72 (br s, 2H). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
41% | With acetylhydroxamic acid; potassium carbonate In N,N-dimethyl-formamide at 20℃; Inert atmosphere | Intermediate 1 : lsoxazolo[5,4-c1pyridin-3-ylamine.; To a solution of 3-chloro-isonicotinitrile (1.13 g, 8.36 mmol) in DMF (6.0 mL) were added potassium carbonate (1.69 g, 12.2 mmol) and acetohydroxamic acid (0.91 g, 12.2 mmol). The reaction mixture was stirred at rt overnight, diluted with EtOAc (200 mL) and extracted with saturated aqueous NaHCO3 (200 mL) then saturated aqueous NaCI (100 mL). The aqueous layers were back extracted with EtOAc (200 mL) and the combined organic layers were dried (MgSO4) and concentrated. The crude residue was purified (FCC, 2 N NH3 in MeOH/DCM) to give isoxazolo[5,4-c]pyhdin-3-ylamine (0.447 g, 41 percent). MS (ESI+): calcd for C6H5N3O m/z 135.04, found 136.2 (M+H)+. 1H NMR (d6-DMSO): 8.93 (d, J = 0.8, 1 H), 8.45 (d, J = 5.2, 1 H), 7.88-7.86 (dd, J = 5.2, 1.2, 1 H), 6.72 (br s, 2H). |
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