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2-Benzylaminoethanol

N-benzyl-N'-(2-methylphenyl)-1,2-diaminoethane hydrochloride

thionyl chloride

N-(2-chloroethyl)-N-benzylamine hydrochloride

o-toluidine

2,3-dibromopropionamide

N-benzyl-N'-(2-methylphenyl)-1,2-diaminoethane hydrochloride

N-(2-chloroethyl)-N-benzylamine hydrochloride

→

1-benzyl-4-(2-methylphenyl)piperazine-2-carboxamide

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실험 절차

2-Benzylaminoethanol (18.8 ml, 20 g, 0.13 mol) was converted to N-(2-chloroethyl)-N-benzylamine hydrochloride with thionyl chloride (19 ml, 31 g, 0.26 mol) according to the procedure described in J. Chem. Soc. 1955, 896. N-(2-chloroethyl)-N-benzylamine hydrochloride (4.0 g, 19 mmol) was converted to N-benzyl-N'-(2-methylphenyl)-1,2-diaminoethane hydrochloride by the procedure of Syn. Comm. 18, 45-50 (1988), using o-toluidine (6.1 ml, 6.1 g, 57 mmol) in place of aniline. 1-benzyl-4-(2-methylphenyl)piperazine-2-carboxamide was prepared from 2,3-dibromopropionamide (7.9 g, 34 mmol) by the procedure of J. Med. Chem. 35, 743-750 (1992) using N-benzyl-N'-(2-methylphenyl)-1,2-diaminoethane hydrochloride (4.95 g, 18 mmol) in place of N-benzyl-N'-phenyl-1,2-diaminoethane hydrochloride.

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