Oxalyl chloride → 4-cyclohexyl-N-(1,1-dimethylethyl)-N-hydroxy-cyclohexane-carboxamide

참여 물질

반응 단계

To a solution of 4-cyclohexyl-cyclohexanecarboxylic acid (1.47 g, 7 mmol) in 20 ml of tetrahydrofuran was added oxalyl chloride (0.67 ml, 7.7 mmol) and a few drops of dimethylformamide. After stirring for one hour, the reaction mixture was added dropwise into a cold (~0° C.), stirred solution of N-(1,1-dimethylethyl)hydroxylamine hydrochloride (1.75 g, 14 mmol) in 40 ml of 1N sodium hydroxide. The mixture was stirred for two hours, from 0° C. to room temperature and extracted three times with ethyl acetate. The combined ethyl acetate extracts were then washed twice with water, dried with anhydrous sodium sulfate and concentrated. Purification by flash chromatography provided 0.186 g of the 4-cyclohexyl-N-(1,1-dimethylethyl)-N-hydroxy-cyclohexane-carboxamide as a white solid (m.p. 119°-120° C.).

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