反应详情

A stirred mixture of (2RS,5S)-3-[5-(4-fluoro-phenyl)-1-(toluene-4-sulfonyl)-pyrrolidin-2-yl]-propionaldehyde (375 mg, 1.0 mmol, prepared from the corresponding alcohol by oxidation in accordance with the general method of example 29a), tosylmethyl-isocyanate (199 mg, 1.0 mmol), potassium carbonate (207 mg, 1.5 mmol) and MeOH (10 ml) was heated under reflux conditions for 35 h, evaporated and purified by column chromato-graphy on silica gel (ethyl acetate/hexane 4:1) to give the title compound (100 mg, 24%) as a light yellow oil, MS: m/e=415.3 (M+H+).

1. temperaturewas heated under reflux conditions for 35 h
2. customevaporated
3. custompurified by column chromato-graphy on silica gel (ethyl acetate/hexane 4:1)