Methanesulfonyl chloride → 3-(3,4-Dichlorophenyl)-1-(3,4,5-trimethoxybenzoyl)-3-pyrrolidineethanol methansulfonate

Beteiligte Stoffe

Reaktionsschritte

Combine 1-(3,4,5-trimethoxybenzoyl)-3-(3,4-dichlorophenyl)-3-(2-hydroxyethyl)pyrrolidine (200 mg, 0.44 mmol) and N,N-diisopropylethylamine (0.17 mL, 0.97 mmol) in dichloromethane (25 mL). Cool in a ice-bath. Add dropwise, methanesulfonyl chloride (0.066 g, 0.57 mmol). After 2 hours, extract with 1 M hydrochloric acid solution and 5% sodium bicarbonate solution. Dry the organic layer over MgSO4, filter, and concentrate in vacuo to give the title compound: Rf=0.42 (silica gel, 6% methanol/dichloromethane); mp; 64.0-66.0° C.

Herkunft & Nachweise