Trifluoroacetic acid → 4-Amino-1-(5-piperid-1-ylcarbonyl-2-pyridyl)piperidine

Participants

Reaction Steps

A solution of 0.475 g of 4-tert-butoxycarbonylamino-1-(5-piperid-1-ylcarbonyl-2-pyridyl)piperidine (1.24 mmol) and 5 ml of trifluoroacetic acid in 20 ml of dichloromethane is stirred for 1 hour. The reaction medium is concentrated under reduced pressure and then taken up in dichloromethane. The solution is basified (pH=9) using saturated aqueous sodium carbonate solution. The aqueous phase is extracted five times with dichloromethane. The organic phases are dried over magnesium sulfate and concentrated under reduced ressure. The 4-amino-1-(5-piperid-1-ylcarbonyl-2-pyridyl)piperidine is obtained in the form of an oil (0.310 g, 88%). [M+H+]=289.4

Provenance & Evidence