Cesium carbonate → HCID 178497514, compound

Participants

Reaction Conditions

Reaction Steps

To a mixture of cesium carbonate (2.54 g), palladium(II) acetate (62 mg) and 2,2′-bis(diphenylphosphino)-1,1′-binaphthyl (260 mg) in toluene (6 ml) was successively added methyl 4′-trifluoromethylsulfonyloxy-1,1′-biphenyl-4-carboxylate (1 g) and 1-(trans-4-cyclohexylcyclohexyl)-piperazine (835 mg) in stream of nitrogen. The mixture was stirred at ambient temperature for 45 minutes and at 110° C. for further 23 hours. After cooling to room temperature, water and dichloromethane was added to the reaction mixture. The resulting precipitate was collected by filtration and washed with water and dried to give methyl 4′-[4-(trans-4-cyclohexylcyclohexyl)-1-piperazinyl]-1,1′-biphenyl-4-carboxylate (684.8 g).

Provenance & Evidence