Ammonium formate → methyl 4'-[2-[[(2R)-2-hydroxy-2-(3-pyridyl)ethyl]-amino]ethyl]-1,1'-biphenyl-4-carboxylate

Participants

Reaction Steps

Methyl 4′-[2-[N-benzyl-N-[(2R)-2-(6-chloro-3-pyridyl)-2-hydroxyethyl]amino]ethyl]-1,1′-biphenyl-4-carboxylate (470 mg), ammonium formate (296 mg) and palladium on carbon powder (100 mg) in methanol (10 ml) and water (1.0 ml) was refluxed for 30 minutes. The reaction mixture was filtrated and poured into water and extracted with ethyl acetate. The organic layer was washed with brine, dried over magnesium sulfate, and evaporated in vacuo. A mixture of the residue was chromatographed (chloroform-methanol) over silica gel to give methyl 4′-[2-[[(2R)-2-hydroxy-2-(3-pyridyl)ethyl]-amino]ethyl]-1,1′-biphenyl-4-carboxylate (326 mg) as a colorless foam.

Provenance & Evidence