反应详情

A mixture of crystalline diazo keto ester 4 (45 mg, 0.152 mmol) rhodium octanoate (1.2 mg, 0.00154 mmol) and anhydrous toluene (3.0 ml) was heated in an oil bath at 80° and under a nitrogen atmosphere for 15 minutes. (Note: gas evolution occurred at room temperature before heating). After cooling to room temperature, the reaction mixture was diluted with ethyl acetate (3 ml), dried over magnesium sulfate, filtered, evaporated under vacuum and stripped with methylene chloride to afford 5 as a pale green oil (41 mg, 100%).

1. temperaturewas heated in an oil bath at 80° and under a nitrogen atmosphere for 15 minutes
2. temperatureAfter cooling to room temperature
3. dry with materialdried over magnesium sulfate
4. filtrationfiltered
5. customevaporated under vacuum