反应详情

To 3-oxo-8-aza-bicyclo[3.2.1]octane-8-carboxylic acid tert-butyl ester (300 mg, 1.33 mmol) was added DME (9 mL) and EtOH (0.2 mL). The mixture was cooled to 0 C when TOSMIC (530 mg, 2.65 mmol) and potassium tert-butoxide (609 mg, 5.2 mmol) were added. The mixture was stirred to room temperature and then heated at 50 C for 18 h. After this time the reaction was evaporated and loaded onto a silica column and eluted with heptane-10% to 30% ethyl actetate to give the title compound (216 mg, 69%). Method B HPLC-MS: MH+ requires m/z=237. Found: m/z=237, Rt=1.35 min (86%).

1. additionwere added
2. temperatureheated at 50 C for 18 h
3. customAfter this time the reaction was evaporated
4. washeluted with heptane-10% to 30% ethyl actetate