Sulfuric Acid → HCID 12422094, compound

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Reaction Steps

To 200 ml. of ethyl ether is added 15 g. of 5-(p-chlorobenzyl)-1,2,3,4-tetrahydro-1-naphthoic acid, and a solution of 5 g. of sodium dichromate in 24 ml. of 6N sulfuric acid is added dropwise. After stirring overnight, 100 ml. of water is added and the ethereal layer is further washed with water and dried over anhydrous magnesium sulfate. The solvent is distilled off under reduced pressure and the oily residue is purified by column chromatography on silica gel equilibrated with oxalic acid with chloroform as the eluent and, then, recrystallized from benzene. The described procedure gives 5-(p-chlorobenzoyl)-1,2,3,4-tetrahydro-1-naphthoic acid, melting point: 152.5°-153.5°C.

Provenance & Evidence