Potassium Carbonate → 1-(1-Naphthalen-1-yl-ethyl)-aziridine-2-carboxylic acid methyl ester

関与物質

反応手順

To a solution of (S)-(−)-1-(1-naphthyl)ethylamine (20.8 g, 120 mmol) in acetonitrile (HPLC grade, 600 mL) is added K2CO3 (52.7 g, 360 mmol) and methyl 2,3-dibromopropionate (30 g, 120 mmol). The solution is stirred overnight at room temperature. The solution is evaporated to dryness, then H2O/EtOAc (1:1) (600 mL) is added, and the mixture is extracted with EtOAc (4×100 mL). The organic extracts are combined, dried and concentrated under vacuum. The residue is purified by flash chromatography (silica gel; Hexane/EtOAc 1:2) to provide 24 g (78%) of the title compound as a mixture of two diastereomers in an equimolecular ratio. M+H+=256.10.

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