Triethylamine → (1S,4S)-tert-butyl 5-(4-(trifluoromethyl)pyridin-2-yl)-2,5-diazabicyclo[2.2.1]heptane-2-carboxylate

Participants

Reaction Conditions

Reaction Steps

To a mixture of (1S,4S)-tert-butyl 2,5-diazabicyclo[2.2.1]heptane-2-carboxylate (0.6 g, 3.03 mmol) in DMF (5 mL) was added 2-chloro-4-trifluoromethylpyridine (0.2 g, 1.1 mmol) and triethylamine (0.22 g, 2.2 mmol). The reaction mixture was heated at reflux for 1 hour in a microwave reactor at 80° C. Then the solvent was evaporated in vacuo. The crude product was purified by column chromatography on silica gel with eluent (petroleum ether:ethyl acetate from 50:1 to 10:1) to afford the intermediate (1S,4S)-tert-butyl 5-(4-(trifluoromethyl)pyridin-2-yl)-2,5-diazabicyclo[2.2.1]heptane-2-carboxylate (0.1 g).

Provenance & Evidence