Triethylamine → Methyl 4-{[1-(3,4-dichlorobenzyl)-4-piperidinyl]amino}-4-oxobutanoate

Participants

Reaction Steps

To a solution of 1-(3,4-dichlorobenzyl)-4-piperidinamine hydrochloride (3.50 g) in dichloromethane (100 ml) was added methyl 4-chloro-4-oxobutanoate (2.00 g) dropwise. Triethlamine (3.90 g) was added and the reaction stirred under nitrogen for 2 hours. Saturated sodium hydrogen carbonate solution was then added, with the solution being extracted three times with dichloromethane. The pooled organic phase was washed once with water, once with saturated brine and dried over anhydrous magnesium sulfate. After filtration the solvent was removed under reduced pressure to leave methyl 4-{[1-(3,4-dichlorobenzyl)-4-piperidinyl]amino}-4-oxobutanoate (3.00 g).

Provenance & Evidence