反应详情

温度

0 °C

To a solution of ethyl 4-(hydroxyimino)cyclohexanecarboxylate (1.85 g) in pyridine (10 mL) was added 4-methylbenzenesulfonyl chloride (2.28 g) over 5-10 min at −20° C. The reaction mixture was stirred for several hours while allowing to gradually warm to 0° C. The reaction mixture was added to ice water, and the precipitate was collected by filtration, and washed with ice water to give the title compound (2.54 g).

1. filtrationthe precipitate was collected by filtration
2. washwashed with ice water