反应详情

Compound 2e was prepared following the procedure outlined in Step 1 of Example 6 using 2.28 g (11.0 mmol) of 5,6-dimethyl-pyridine-2-carbonyl chloride hydrochloride (prepared as described by Paine, J. B.; J. Het. Chem. 1987, 351), 1.91 g (10.0 mmol) of 3-phenylamino-acrylic acid ethyl ester, 1.08 g (27.0 mmol) of 60% sodium hydride and 25 mL tetrahydrofuran. Flash chromatography using 10-80% ethyl acetate in hexane yielded 575 mg of the product as yellow solid. LC-MSD, m/z for C19H20N2O3 [M+H]+=325.5, HPLC retention time: 1.9 min.