m-Chloroperbenzoic acid → 2,3-Dihydro-5,6-dimethoxy-2-[(1-oxido-4-pyridinyl)methylene]-1H-inden-1-one

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Reaction Steps

4-[(5,6-Dimethoxy-1-indanon-2-ylidene)methyl]pyridine (2.5 g) was dissolved in methylene chloride (60 ml) and chilled. m-Chloroperbenzoic acid (2.0 g) was added to reaction mixture and then stirred for 4 hours. Solid obtained was filtered. The wet solid so obtained was stirred with 10% sodium bicarbonate solution. The solid was filtered, washed with acetone and then dried to get the title compound (2.5 g).

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