Abstract
Abstract A novel synthesis of 2-aroyl-7H-furo[3,2-g][1]benzopyran-7-ones, viz., IIIa and b was reported by condensing 2-benzoyl- and 2-(p-methoxybenzoyl)-3-methyl-5-acetyl-6-hydroxybenzofuran (Ia and b) with C6H5CH2COONa-Ac2O. VI was synthesised by condensing 7-hydroxy-6-benzoyl-4,8-dimethylcoumarin (IV) with V. The basic ethers (IIId–j) were synthesised by demethylating IIIb with pyridinehydrochloride and resultant IIIc was condensed with N,N-dialkyl-2-haloalkanamine hydrochlorides. UV, IR, 1H NMR, and Mass spectral data are also given.
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