Borane;tetrahydrofuran → 2,3-Dihydro-1H-pyrido[2,3-b][1,4]oxazine

Participants

Reaction Steps

Using 1H-pyrido[2,3-b][1,4]oxazin-2-one (0.3 g, 2 mmol) and borane-THF (8 mL of a 1M solution in THF, 8 mmol) in THF (20 mL) to yield the title compound as a yellow solid (180 mg, 66%). δH (CDCl3) 3.38-3.46 (2H, m), 3.85 (1H, br s), 4.38-4.45 (2H, m), 6.74 (1H, dd, J 7.7, 4.9 Hz), 6.83-6.88 (1H, m), 7.61 (1H, dd, J 4.7, 1.5 Hz).

Provenance & Evidence