DOI: 10.1039/A607538J
(Paper)
Reference Section for: J. Chem. Res. (S), 1997, 244-245
Regioselective Synthesis of Furo[3,2-c][1]benzopyran-4-one and Furo[3,2-c]quinolin-4-one
(Note: The full text of this document is currently only available in the PDF Version )
Krishna C. Majumdar and Trijit Bhattacharyya
Abstract
4-Hydroxycoumarins and 4-hydroxy-1-methyl-2-quinolone react with chloroacetaldehyde in the presence of aqueous potassium carbonate to give 3-hydroxy-2,3-dihydrofuro derivatives (60–75%) which on treatment with aqueous hydrochloric acid provide furo[3,2-c]coumarins and the hitherto unreported 5-methylfuro[3,2-c]quinolin-4-one in nearly quantitative yields.
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