Potassium Hydroxide → Ethyl (3,5-di-t-butyl-4-oxocyclohexa-2,5-dienylidene)acetate

Participants

Reaction Conditions

Reaction Steps

In benzene (150 mL) was dissolved Intermediate 10 (6.7 g, 22.9 mmol) and this treated with a solution of potassium hydroxide (13.9 g [85%], 210 mmol) and potasium ferricyanide (K3Fe(CN)6) (15.2 g, 46 mmol) in water (150 mL). The mixture stirred under nitrogen atmosphere at 40° C. for 2 hours. The benzene layer then separated, washed with brine (100 mL) and dried over magnesium sulfate. The solvent was evaporated in vacuo to give a red oil, 6.1 g (92%), which was used as is.

Provenance & Evidence