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CAS No. : | 954239-22-6 | MDL No. : | MFCD08690097 |
Formula : | C8H5F3N2 | Boiling Point : | No data available |
Linear Structure Formula : | - | InChI Key : | PFAFARJWFBPNIN-UHFFFAOYSA-N |
M.W : | 186.13 | Pubchem ID : | 21455599 |
Synonyms : |
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Signal Word: | Warning | Class: | |
Precautionary Statements: | P261-P305+P351+P338 | UN#: | |
Hazard Statements: | H302-H315-H319-H335 | Packing Group: | |
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 |
---|---|---|
83% | With iodine; potassium hydroxide; In N,N-dimethyl-formamide; at 20.0℃; for 3.0h; | I2 (330 mg, 1.30 mmol, 2.0 eq.) was added to a stirred solution of 14 (121 mg, 0.65 mmol, 1.0 eq.) and KOH (73 mg, 1.30 mmol, 2.0 eq.) in DMF (6.5 mL) at rt. After stirring at rt for 3 h, the reaction mixture was quenched with sat Na2S2O3(aq) and extracted with EtOAc, dried over MgSO4, and evaporated in reduced pressure, to give the crude product. Purification with Yamazen automated chromatography with Hex:EtOAc = 9:1 as eluent to give 15 (169 mg, 83%) as a colourless solid, 1H NMR (300 MHz, CDCl3) delta 10.65 (1H, br s), 7.82 (1H, d, J = 3.0 Hz), 7.65 (1H, d, J = 9.0 Hz), 7.47 (1H, dd, J = 9.0, 0.5 Hz); MS (ESI) m/z 313 [(M + H)+], RT 4.46 min (condition B). |
With iodine; potassium hydroxide; In N,N-dimethyl-formamide; at 20.0℃; for 3.0h; | Reference Example 17; 6-Trifluoromethyl-3-iodo-1H-indazolePotassium hydroxide (73 mg, manufactured by Wako Pure Chemical Industries, Ltd.) and iodine (330 mg, manufactured by Kanto Chemical Co., Inc.) were added to a solution of 6-(trifluoromethyl)-1H-indazole (121 mg) synthesized according to the literature (Shoji, et al., Tetrahedron Lett., 2004, 45, 1769-1772) in N,N-dimethylformamide (6.5 mL, manufactured by Kanto Chemical Co., Inc.), and the mixture was stirred for 3 hours at room temperature. An aqueous solution of sodium thiosulfate (20 mL) was added to the reaction solution, and the mixture was extracted with ethyl acetate (3×20 mL), washed with brine (40 mL), and dried (MgSO4). The solvent was then evaporated. The resulting residue was purified by silica gel column chromatography (hexane:ethyl acetate=9:1), to give 169 mg of the title compound. LC-MS: HPLC retention time 4.46 minutes, m/z 313 (M+H), condition B-1. |
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