Triethylamine → 1-Cyclopropyl-3-(2-nitrophenyl)-propyl methanesulfonate

Participants

Reaction Steps

A mixture of 0.5 g of 1-cyclopropyl-3-(2-nitrophenyl)-propan-1-ol (2.26 mmol), 0.26 g of triethylamine (2.6 mmol) and 12 ml of dichloromethane is cooled to a temperature of 5° C. and 0.28 g of methanesulfonic acid chloride, dissolved in 3 ml of dichloromethane, is added dropwise. The resulting mixture is stirred for 16 hours at ambient temperature. The organic phase is washed with ice-water and dried over sodium sulfate and concentrated by evaporation. 1-Cyclopropyl-3-(2-nitrophenyl)-propyl methanesulfonate is obtained in the form of a crude product, which is used directly in the cyclisation.

Provenance & Evidence