4-(Aminomethyl)cyclohexanone, N-BOC protected → HCID 86647903, compound

Participants

Reaction Conditions

Reaction Steps

A solution of tert-butyl (4-oxocyclohexyl)methylcarbamate (1.00 g) was dissolved in tetrahydrofuran (20 mL) and cooled to −78° C. Methylmagnesium bromide (4.40 mL) was added dropwise. The reaction was stirred for 2 hours at −78° C. then allowed to warm to 0° C. and stirred for 30 minutes. The resulting suspension was quenched with water (10 mL), diluted with ether (50 mL) and washed with ammonium chloride (25 mL) and brine (25 mL), dried over magnesium sulfate, filtered, and concentrated. Silica gel chromatography (Reveleris 80 g) eluting using a gradient of 5% to 50% ethyl acetate/dichloromethane over 30 minutes (flow=60 ml/min) gave the title compound as a ˜2:1 mixture of cis and trans isomers.

Provenance & Evidence