Succinic anhydride → HCID 89449968, compound

Participants

Reaction Conditions

Reaction Steps

The 6-amino-3-pyridinecarbonitrile (commercially available, 1.0 g, 8.40 mmol) was dissolved in tetrahydrofuran (20 mL) then succinic anhydride (1.04 g, 10.5 mmol) was added, the mixture was stirred at 100° C. for 12 h. The reaction was stopped and the solution was washed with a saturated solution of sodium carbonate. The organic layer was concentrated under vacuum. The residue was purified by flash chromatography eluting with methanol-ethyl acetate (5/95) to give 4-[(5-cyano-2-pyridyl)amino]-4-oxo-butanoic acid A2 (0.325 g, 18%). M.p.=220-221° C., 1H NMR (400 MHz, DMSO-d6) δ 12.18 (bs, 1H), 11.04 (s, 1H), 8.78 (s, 1H), 8.21 (m, 2H), 2.69 (t, 2H), 2.52 (m, 2H) ppm. LC-MS (Method B): RT 1.00, 218 (M−H+) The following compounds from table A were prepared by the same method:

Provenance & Evidence