Diisopropylamine → 4-Fluoro-3-methyl-5-(tributylstannyl)pyridine

Participants

Reaction Steps

A THF (1 mL) solution of diisopropylamine (160 μL; WAKO) was cooled to −78° C. under a nitrogen atmosphere followed by the dropwise addition of normal butyllithium (2.6 M, 430 μL; KANTO). The resulting mixture was stirred as it was for 30 minutes followed by the dropwise addition of a THF (1 mL) solution of 4-fluoro-3-methylpyridine (111 mg) and the resulting mixture was further stirred for 1 hour. Then tri-n-butyltin chloride (330 μL; TCI) was added and the resulting mixture was slowly raised to room temperature and then stirred for 2 hours. Saturated aqueous sodium bicarbonate solution was added to the reaction mixture solution, to the reaction mixture was extracted with ethyl acetate, and the organic layer was washed with saturated brine. The organic layer was dried and the solvent was evaporated under reduced pressure to give the title compound.

Provenance & Evidence