Thionyl Chloride → Benzoyl chloride, 3-methoxy-2-methyl-

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Reaction Steps

To 3-methoxy-2-methylbenzoic acid (454 g, 2.73 tool) in 1300 mL chloroform containing 20 g dimethyl formamide at 65° C., thionyl chloride (390 g) was added dropwise over 6 hours, whereupon the solvent was removed by evaporation at a reduced pressure. The residue (512 g) was distilled at 110° C. at 1-2 mm Hg to give 3-methoxy-2-methylbenzoyl chloride (435 g. 85%).

Provenance & Evidence