反应详情

A solution of 6-(3-chlorophenyl)-2-pyridinecarboxylic acid (CAN 863704-38-5, 0.2 mmol), 2-methyl-alanine methyl ester (0.2 mmol) and HBTU (CAN 94790-37-1, 114 mg, 0.3 mmol) in DMF (0.5 mL) was stirred for 20 h at room temperature. The crude reaction mixture was concentrated in vacuo by centrifugation and purified by flash chromatography (silica gel, 20 g, 0% to 100% ethyl acetate in heptane) to give the desired product together with some impurities (73 mg, 116%) as light yellow oil; MS (LC/MS): 333.1 (M+H).

1. customThe crude reaction mixture
2. concentrationwas concentrated in vacuo by centrifugation
3. custompurified by flash chromatography (silica gel, 20 g, 0% to 100% ethyl acetate in heptane)