Diphenyl Ether → Ethyl 7-methyl-4-oxo-1,8-naphthyridine-3-carboxylate

Participants

Reaction Conditions

Reaction Steps

A solution of diphenyl ether was heated to 250° C. and the product of Example 1a (2.50 g, 9.0 mmol) was added in several small portions over a period of about 5 min then heated at 250° C. for 30 min. After cooling to room temperature diluted with hexane. The resulting solid was filtered and was dried under vacuum giving the title compound as a tan solid (1.47 g, 71%).

Provenance & Evidence