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CAS No. : | 446-08-2 | MDL No. : | MFCD00055566 |
Formula : | C7H6FNO2 | Boiling Point : | - |
Linear Structure Formula : | - | InChI Key : | FPQMGQZTBWIHDN-UHFFFAOYSA-N |
M.W : | 155.13 | Pubchem ID : | 101412 |
Synonyms : |
|
Signal Word: | Warning | Class: | N/A |
Precautionary Statements: | P261-P264-P271-P280-P302+P352-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 |
---|---|---|
50% | With sulfuric acid In ethanol; toluene | A. Ethyl 2-amino-5-fluorobenzoate 2-Amino-5-fluorobenzoic acid (1.0 g, 6.4 mmol) was dissolved in ethanol (15 mL) and toluene (10 mL). Several drops of concentrated H2SO4 were added. The reaction was refluxed with a Dean Stark trap overnight. The reaction was cooled to rt and the solvents removed in vacuo. The product was isolated by chromatography on silica gel (4*15 cm column) eluted with chloroform/ methanol (98:2, v/v-500 mL followed by 95:5, 500 mL) in 50percent yield. MS (ES+): m/z 184.0 (M+1); 1H NMR (CDCl3) δ 7.55 (d, 1H, ArH), 7.03 (m, 1H, ArH), 6.61 (dd, 1H, ArH), 5.6 (bs, 2H, NH2), 4.33 (q, 2H,CH2), 1.40 (t, 3H, CH3). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
56% | With N-chloro-succinimide In N,N-dimethyl-formamide at 20℃; for 16 h; | A mixture of 2-amino-5-fluorobenzoic acid (5.0 g,32.26 mmol), NCS (4.39 g, 32.9 mmol) and DMF (30 mE) was stirred at room temperature for 16 hours. The reaction solution was diluted with water (100 mE) and extracted with ethyl acetate (3x100 mE). The organic layer was combined, washed with saturated saline, dried over anhydrous sodium sulphate, and concentrated under reduced pressure. The residue was stirred with dichioromethane (100 mE) for 10 mm-utes, and filtrated to give compound 7-f (3.4 g, yield 56percent), which was grey solid. LC-MS (ESI): mlz=190.0 (M+H). |
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