Example 10

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Sodium dithionate (18.7 g, 107.3 mmol, 7.3 equiv) was dissolved in 20 mL H2O and loaded into a separatory funnel. Next, a solution of benzoquinone (2 g, 14.7 mmol, 1 equiv) in 75 mL diethyl ether was added. The diphasic mix was stirred vigorously for 30 minutes and the organic layer changed color from orange to pale yellow. Organic phase was washed with brine, dried over MgSO4, and concentrated to yield a white solid (1.69 g, 83%).

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