1-Cinnamylpiperazine → 2-(Ethoxy)-2-oxoethyl trans-4-(3-phenylprop-2-en-1-yl)piperazine-1-carboxylate

Participants

Reaction Steps

A solution of 1.40 g (6.93 mmol) of trans-1-cinnamylpiperazine and 1.74 g (7.76 mmol) of ethyl{[(phenoxy)carbonyl]oxy}acetate (J. Med. Chem., 1999, 42, 277-290) in 15 ml of toluene is heated at 80° C. overnight. It is evaporated to dryness and the residue is taken up in 50 ml of ethyl acetate. It is washed with 2 times 20 ml of water and 1 times 10 ml of saturated aqueous sodium chloride solution. It is dried over sodium sulphate and evaporated to dryness. The residue is purified by chromatography on silica gel, eluting with a 50/50 mixture of cyclohexane and ethyl acetate, then with ethyl acetate, to give 0.814 g of product in the form of a pale yellow oil.

Provenance & Evidence