反应详情

温度

100 °C

(R)-(−)-5′-Bromospiro[1-azabicyclo[2.2.2]octane-3,2′(3′H)-furo[2,3-b]pyridine](295 mg, 1 mmol), trimethylsilylacetylene (0.355 mL, 2.5 mmol), tetrakis(triphenylphosphine)palladium (230 mg, 0.2 mmol), triethylamine (2 mL) and anhydrous acetonitrile (2 mL) were combined in a heavy-walled threaded glass tube containing a magnetic stir bar, purged with argon and sealed with a Teflon plug and FETFE O-ring. The mixture was stirred and heated at 100° C. for 4 hours, cooled to room temperature, dissolved in chloroform (25 mL), washed with saturated aqueous sodium carbonate (2 mL), dried (MgSO4), and evaporated under reduced pressure. Purification by flash chromatography through silica gel (eluting with ammoniated ether/methanol, 9:1) afforded the title compound (280 mg, 0.90 mmol, 90%): chemical ionization MS (m/z, relative intensity) 313 ([MH]+, 30).

1. additioncontaining a magnetic stir bar
2. custompurged with argon
3. customsealed with a Teflon plug and FETFE O-ring
4. temperaturecooled to room temperature
5. dissolutiondissolved in chloroform (25 mL)
6. washwashed with saturated aqueous sodium carbonate (2 mL)
7. dry with materialdried (MgSO4)
8. customevaporated under reduced pressure
9. customPurification by flash chromatography through silica gel (eluting with ammoniated ether/methanol, 9:1)