Piperidine → HCID 57809291, compound

Participants

Reaction Conditions

Reaction Steps

To a solution of 4-ethoxy isopthalic acid 3-ethyl ester (600 mg, 2.5 mmol) in 10 mL of acetonitrile was added piperidine (429 mg, 5.0 mmol). The resulting mixture was cooled to 0° C. To this solution was added HBTU (1.4 g, 3.78 mmol, in 5 mL of acetonitrile) followed by N,N-diisopropylethylamine (2.2 mL, 12.6 mmol). The reaction was allowed to stir overnight at room temperature. The reaction mixture was concentrated in vacuo. The residue was diluted with 10% potassium carbonate and extracted with methylene chloride. The organic extract was concentrated and purification of the crude residue by flash column chromatography (silica gel, eluting with a gradient of ethyl acetate in hexanes) gave 632 mg (2.07 mmol, 82%) of pure 2-ethoxy-5-(piperidine-1-carbonyl)-benzoic acid ethyl ester. LC-MS: 306.3 [(M+H)+].

Provenance & Evidence