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CAS No. : | 403-45-2 | MDL No. : | MFCD01859863 |
Formula : | C6H4FNO2 | Boiling Point : | - |
Linear Structure Formula : | - | InChI Key : | - |
M.W : | 141.10 | Pubchem ID : | - |
Synonyms : |
|
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: |
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* 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 |
---|---|---|
With N,N-dimethylformamide di-tert-butyl acetal; for 3.0h;Heating / reflux; | To a stirred and refluxed solution of 6-fluoro-nicotinic acid (0.092 g, 6.52 mmol) in benzene and 2-methyl-propan-2-ol (2: 1,15 : 7 mL) was added dropwise N, N- [DIMETHYLFORMAMIDE] di-tert-butyl acetal (8.2 mL, 29.6 mmol). The reaction mixture was refluxed for 3 hours, cooled to room temperature and partitioned between aqueous [NAHC03] and dichloromethane. The organic layer was washed with water and brine, dried [(MGS04),] filtered, concentrated under reduced pressure and purified by flash chromatography with 15% to 30% ethyl acetate in hexane to provide the titled compound. MS (CI) m/z 197 (M+1) [+] [; IH] NMR (300 MHz, CDC13) [5] ppm 8.82 (d, 1H), 8.38 (m, 1H), 6.98 (d, [1H),] 1.64 (s, 9H). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
In hexane; benzene; | Example 40A 6-Fluoro-nicotinic acid tert-butyl ester To a stirred and refluxed solution of 6-fluoro-nicotinic acid (0.092 g, 6.52 mmol) in benzene and 2-methyl-propan-2-ol (2:1, 15:7 mL) was added dropwise N,N-dimethylformamide di-tert-butyl acetal (8.2 mL, 29.6 mmol). The reaction mixture was refluxed for 3 hours, cooled to room temperature and partitioned between aqueous NaHCO3 and dichloromethane. The organic layer was washed with water and brine, dried (MgSO4), filtered, concentrated under reduced pressure and purified by flash chromatography with 15% to 30% ethyl acetate in hexane to provide the titled compound. MS (CI) m/z 197 (M+1)+; 1H NMR (300 MHz, CDCl3) delta ppm 8.82(d, 1H), 8.38(m, 1H), 6.98(d, 1H), 1.64 (s, 9H). |
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