Hydrochloric Acid → 3,4-Dimethoxybicyclo[4.2.0]octa-1,3,5-trien-7-one

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Reaction Steps

7,7-Diethoxy-3,4-dimethoxybicyclo[4.2.0]octa-1,3,5-triene (1.76 g, 6.98 mmol) is stirred in a mixture of THF/water (6/1) at ambient temperature. 815 mg of an aqueous 11N HCl solution (1.1 eq, 7.7 mmol) are then added. The reaction mixture is stirred for 2 hours ambient temperature. Water is added to facilitate two extractions with ethyl acetate (2×30 mL). The organic phases are dried over MgSO4 and then subjected to drying. There are obtained 1.01 g of the title product in the form of a grey powder.

Provenance & Evidence