8-Benzyl-3-(trifluoromethylsulfonyloxy)-8-azabicyclo[3.2.1]oct-3-ene → 3-(8-Benzyl-8-aza-bicyclo[3.2.1]oct-2-en-3-yl)-2-tert-butoxy-benzonitrile

Participants

Reaction Conditions

Reaction Steps

To a solution of 3-bromo-2-tert-butoxy-benzonitrile-(30.73 g, 0.121 mol) in THF (100 mL) at 0° C. was added 2 M isopropylmagnesium chloride in THF (60 mL) dropwise. The reaction mixture was stirred for 1 h and then tetrakis(triphenylphosphine)palladium(0) (2.33 g, 0.002 mol) was added followed by trifluoro-methanesulfonic acid 8-benzyl-8-aza-bicyclo[3.2.1]oct-2-en -3-yl ester (35.00 g, 0.101 mol) in THF (23 mL). The reaction mixture was refluxed at 80° C. for 1 h, cooled to RT, washed with brine, and extracted with EtOAc (2×). The organic layer was dried over sodium sulfate and the solvent was evaporated to provide the title compound (39.2 g) which was used without further purification. (m/z): [M+H]+ calcd for C25H28N2O 373.22; found 373.2.

Provenance & Evidence