Thionyl Chloride → HCID 60142727, compound

Participants

Reaction Steps

3-(2-chloro-6-fluorophenyl)-5-(1-(pyridin-3-yl)-5-(trifluoromethyl)-1H-pyrazol-4-yl)isoxazole-4-carboxylic acid (30 mg, 0.066 mmol) was treated with thionylchloride (1.5 mL) and stirred at reflux for 2 h. The mixture was concentrated under reduced pressure. The intermediate was treated with benzene (3×) and the benzene was evaporated to remove water. Then, the obtained mixture was dissolved in benzene (1.5 mL) and sodium methanethiolate (32.5 mg, 0.46 mmol) was added. The reaction mixture was stirred at reflux for 5 h. The mixture was diluted with dichloromethane and washed with water (3×), dried over sodium sulfate, filtered and concentrated under reduced pressure. The product (example IB-68) was purified by pTLC (1:1 EE/PE) to give 3 mg of a white solid (yield 9%). Result of LC/MS MH+: 482.76; 1H NMR (CDCl3): 2.33 (t, 3H), 7.19 (t, 1H), 7.33-7.55 (m, 6H), 8.23 (s, 1H)

Provenance & Evidence