Diethylamine → Methyl 3-(2-ethoxycarbonylvinyl)-5-(3,4,5-trifluorophenyl)piperazine-1-carboxylate

Participants

Reaction Steps

Diethylamine (2 mL) was added to a solution of 2-(2-ethoxycarbonylvinyl)-6-(3,4,5-trifluorophenyl)piperazine-1,4-dicarboxylic acid 1-(9H-fluoren-9-ylmethyl) ester 4-methyl ester (1.03 g) in acetonitrile (10 mL), and the reaction solution was stirred at room temperature for one hour. The reaction solution was concentrated, and the residue was purified by silica gel column chromatography (heptane->ethyl acetate) to obtain 422 mg of an E/Z isomer mixture of the title compound. The property value of the compound is as follows.

Provenance & Evidence