Diethyl Ether → 2-tert-Butyl-3-chloropyridine

Participants

Reaction Conditions

Reaction Steps

2,3-Dichloropyridine (1.0 g, 0.0068 mol) and copper iodide (0.065 g, 0.341 mmol) were dissolved in THF (6 mL). The mixture was degassed three times then cooled to 0° C. with an ice bath. Then tert-butyl(chloro)magnesium in diethylether (5.10 mL, 0.0102 mol) was added drop wise to the reaction mixture under nitrogen keeping the temperature at 0° C. with an ice bath. When the addition was complete, it was left to warm up to room temperature for 16 hours. A saturated aqueous solution of sodium chloride was slowly added to the reaction mixture (20 mL). The product was then extracted with tert-butyl methyl ether (20 mL). The organic layer was then dried over sodium sulfate, filtered, and concentrated in vacuo. The resulting crude was purified by silica gel chromatography eluting with 0 to 5% EtOAc in heptanes to yield the title compound as a yellow oil (0.108 g, 9% yield).

Provenance & Evidence