Ethyl Acetate → (R)-3-[6-(2-methoxy-phenyl)-pyrimidin-4-ylcarbamoyl]-piperidine-1-carboxylic acid benzyl ester

Participants

Reaction Steps

To a solution of 6-(2-methoxy-phenyl)-pyrimidin-4-ylamine (XXIV) (5.80 g, 28.5 mmol) in 60 ml of dichloromethane was added 4-dimethylaminopyridine (4.16 g, 34.2 mmol) followed by dropwise addition of (R)-3-chlorocarbonyl-piperidine-1-carboxylic acid benzyl ester (XXIX) (8.00 g, 28.5 mmol) at room temperature. The reaction mixture was stirred for 2 hours and washed with water. The organic layer was separated, dried over sodium sulfate and concentrated. The obtained crude residue was passed through a pad of silica gel eluting with 25% ethyl acetate in hexane to provide (R)-3-[6-(2-methoxy-phenyl)-pyrimidin-4-ylcarbamoyl]-piperidine-1-carboxylic acid benzyl ester (XXX) (8.5 g, 67%).

Provenance & Evidence