Hydrochloric Acid → 1-(2,4,6-Trichlorophenyl)-2-acetyl-3-(2-chloro-5-myristoylaminoanilino)-3-pyrazolin-5-one

Participants

Reaction Conditions

Reaction Steps

1.07 g (0.01 mole) of lutidine is added to a solution of 30.7 g (0.05 mole) of 1-(2,4,6-trichlorophenyl)-3-(2-chloro-5-myristoylaminoanilino)-2-pyrazolin-5-one and 8 g (0.06 mole) of anhydrous aluminium chloride in 100 ml of dichloromethane. The solution is cooled to 10° C and 5.90 g (0.075 mole) of acetylchloride are added. 8 g (0.075 mole) of lutidine divided into 4 portions of 2 g each (one portion every 15 min) are added in a total period of time of 1 h, the temperature being kept below 10° C. The reaction mixture is stirred for 2 h more and then poured out into 1 l of 1N aqueous hydrochloric acid. The dichloromethane layer is washed until free from acid, dried, and concentrated by evaporation. The product is agitated with methanol.

Provenance & Evidence