Acetyl chloride → 3-Dimethylaminomethyltetrahydropyran-4-one hydrochloride

Participants

Reaction Conditions

Reaction Steps

9.6 g tetrahydropyran-4-one were dissolved in 29 ml acetonitrile, and 9.69 g N,N-dimethyl-methylenammonium chloride, followed by 100 μl acetyl chloride, were added. After the mixture had been stirred at a bath temperature of 60° C. for 45 minutes, it was stirred at room temperature for 60 hours and the precipitate formed was filtered off with suction and dried. 16.4 g 3-dimethylaminomethyltetrahydropyran-4-one hydrochloride were obtained. The corresponding base was liberated from this with methylene chloride and sodium hydroxide solution (32 percent strength by weight).

Provenance & Evidence