Triethylamine → (S)-3-[(methanesulfonyl)oxy]-1-[4-(1-pyrrolidinyl)-2-butynyl]-2-pyrrolidinone

Participants

Reaction Conditions

Reaction Steps

A solution of 1.76 g of (S)-3-hydroxy-1-[4-(1-pyrrolidinyl)-2-butynyl]-2-pyrrolidinone and 2.4 ml of triethylamine in 50 ml of dichloromethane was cooled to 0° C. A 1.2 ml portion of methane sulfonyl chloride was added dropwise and the solution was stirred at 0° C. for 1 hour. The mixture was washed with aqueous sodium bicarbonate and brine, dried, concentrated and reconcentrated from toluene. The residue was purified by chromatography (silica gel) to give 1.5 g of (S)-3-[(methanesulfonyl)oxy]-1-[4-(1-pyrrolidinyl)-2-butynyl]-2-pyrrolidinone as a colorless oil.

Provenance & Evidence