3-Bromo-4-fluorobenzaldehyde → ethyl 4-(3-bromo-4-fluorophenyl)-5-oxo-2-propyl-4,5,6,8-tetrahydro-1H-pyrano[3,4-b]pyridine-3-carboxylate

Participants

Reaction Steps

The product from Example 95A (0.083 g, 0.52 mmol), the product from Example 11B (0.050 g, 0.44 mmol) and 3-bromo-4-fluorobenzaldehyde (0.116 g, 0.57 mmol) in ethanol (1 mL) were heated to 80 C. for 16 hours in a sealed tube, cooled to ambient temperature and concentrated to dryness. The residue was purified on silica gel eluting with 2% methanol in dichloromethane to provide the title compound (0.17 g).

Provenance & Evidence