Potassium Carbonate → 2-Cyclopropyl-4-(trifluoromethyl)pyridine

Participants

Reaction Conditions

Reaction Steps

To 21 ml of toluene were added 1.9 g of 2-chloro-4-trifluoromethylpyridine, 1 g of cyclopropyl borate, 2.92 g of potassium carbonate and 0.26 g of [1,1′-bis(diphenylphosphino)ferrocene]dichloropalladium (II) dichloromethane complex (1:1), and the mixture was stirred at 100° C. for 10 hours. After allowing to cool, the reaction solution was poured into an aqueous saturated ammonium chloride solution, and the resultant solution was extracted with diethyl ether three times, washed with an aqueous saturated sodium chloride solution, dried with anhydrous magnesium sulfate, and concentrated. The residue was subjected to silica gel column chromatography to obtain 1 g of 2-cyclopropyl-4-trifluoromethylpyridine.

Provenance & Evidence