Chlorodifluoromethane → HCID 69898430, compound

Participants

Reaction Steps

Five hundred milligrams (500 mg) of N-[2-(3,4-dimethoxyphenyl)ethyl]-3-hydroxy-2-(4-methylphenyl)acrylamide (1.46 mmol), 0.31 g (1.7 mmol) of 30% aqueous potassium hydroxide solution, 0.1 g (0.3 mmol) of tetrabutylammonium bromide and 10 ml of ethylene glycol dimethyl ether were mixed and chlorodifluoromethane gas was blown thereto at room temperature. After a small amount of 30% aqueous potassium hydroxide solution was further added, a sample was taken out from the reaction mixture and the disappearance of the starting material was confirmed by thin layer chromatograph analysis. Then, 5% hydrochrolic acid was added to the reaction mixture, which was followed by extracted with ethyl acetate, washed with 5% hydrochrolic acid, saturated aqueous sodium bicarbonate solution and saturated brine subsequently, dried over anhydrous magnesium sulfate and concentrated under reduced pressure. The residue was washed with hexane to give 474 mg of N-[2-(3,4-dimethoxyphenyl) ethyl]-3-difluoromethoxy-2-(4-methylphenyl)acrylamide (the present compound 1005).

Provenance & Evidence