1,8-Diazabicyclo(5.4.0)undec-7-ene → (2R,5S)-4-(4-Cyano-3-methoxyphenyl)-2,5-dimethyl-N-(6-trifluoromethyl-3-pyridyl)piperazine-1-carboxamide

Participants

Reaction Conditions

Reaction Steps

Into 5 ml of toluene were dissolved 500 mg of methyl 6-(trifluoromethyl)pyridin-3-ylcarbamate and 557 mg of 4-[(2S,5R)-2,5-dimethylpiperazin-1-yl]-2-methoxybenzonitrile, and then 0.03 ml of DBU was added thereto, followed by heating to 100° C. and 8 hours of stirring. The reaction solution was concentrated and the residue was subjected to silica gel column chromatography to obtain 450 mg of the title compound from an eluate using chloroform-methanol (96:4, v/v).

Provenance & Evidence