Triethylamine → Hydrochloric Acid

Participants

Reaction Conditions

Reaction Steps

To a solution of 0.25 g (0.76 mmol) of {(1R)-1-cyclohexylmethyl-2-[4-(2-methoxyphenyl)-3,6-dihydro-2H-pyridin-1-yl]-ethyl}-amine and 0.21 mL (1.52 mmol) of triethylamine in 10 mL of dichloromethane at 0° C. was added dropwise 0.13 g (0.84 mmol) of 1-methyl-cyclohexanecarboxylic acid chloride in 4 mL of dichloromethane. The reaction mixture was allowed to stir under nitrogen at 0° C. for one hour, and was then concentrated on a rotary evaporator, diluted with ethyl acetate and washed with saturated aqueous NaHCO3 and brine. The organic phase was dried over anhydrous sodium sulfate, filtered and concentrated on a rotary evaporator to yield the crude product, which was purified by flash chromatography on silica gel (dichloromethane/methanol) and then converted to the hydrochloride.hemihydrate salt of the title compound with ethanolic HCl to yield 0.15 g (41%) of yellow solid; mp=93–95° C.; MS (+) ESI m/z=453 (M+H)+.

Provenance & Evidence