Hydrochloric Acid → 3,3-Dimethyl-1-(phenylmethyl)piperazine

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Reaction Steps

3.30 g of 4-benzyl-2,2-dimethyl-piperazine-1-carboxylic acid tert-butyl ester were dissolved in 50 ml methanol, and 25 ml of 1N aqueous hydrochloric acid were added. After stirring overnight 5 ml of concentrated aqueous hydrochloric acid were added. After 2 h the volatiles were removed in vacuo and 2.40 g (97%) of the title compound were obtained as hydrochloride salt, which could be use without further purification.

Provenance & Evidence