4-tert-Butylcyclohexylmethanol → Cyclohexanecarboxaldehyde, 4-(1,1-dimethylethyl)-

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To a solution of 4-(1,1-dimethylethyl)cyclohexanemethanol (1.0 g, 5.9 mmol) in CH2Cl2 (distilled from CaH2) (43 mL) were added at room temperature under argon anhydrous NaOAc (3.84 g, 46.8 mmol). After stirring at room temperature for 5 minutes pyridinium chlorochromate (3.84 g, 17.8 mmol) was added and after stirring for 1 h at room temperature, the reaction was quenched by addition of ethyl ether (200 mL). The crude reaction was filtered through a Fluorasil column to give crude 4-(1,1-dimethylethyl)cyclohexanecarboxaldehyde (0.862 g, 5.12 mmol) as a mixture of trans and cis isomer in 87% yield.

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