2-Aminomethyl-1-ethylpyrrolidine → 5-chloro-N-[(1-ethylpyrrolidin-2-yl)methyl]-2-methoxy-4-methyl-benzamide

Participants

Reaction Conditions

Reaction Steps

In a 1 liter flask equipped with an agitator, a thermometer and a dropping funnel, there are put 46 g (0.36 mole) of 1-ethyl-2-aminomethylpyrrolidine and 45 ml of methylethylketone. While maintaining the temperature of the mixture at about 5° C, there are added dropwise 79 g (0.36 mole) of 2-methoxy-4-methyl-5-chlorobenzoyl chloride dissolved in 400 ml of methylethylketone. The introduction requires about 1 hour. There is precipitation of N-(1-ethyl-2-pyrrolidylmethyl)-2-methoxy-4-methyl-5-chlorobenzamide hydrochloride which is drained, washed on a filter with methylethylketone and air-dried. There are obtained 114 g (yield 91%) of product in the form of white crystals (m.p. 162°-163° C).

Provenance & Evidence