反应详情

To a mechanically stirred mixture of 27 parts of 4-cyano-2,5-diisopropylbenzenesulfonamide and 22 parts trimethyl orthoformate was added a trace of p-toluenesulfonic acid. The reaction was heated at reflux for 4 hours. It was filtered, the filtrate stripped to dryness in vacuo, and the resulting solid recrystallized from methanol to give the title product, m.p. 130°-132°.

1. temperatureThe reaction was heated
2. temperatureat reflux for 4 hours
3. filtrationIt was filtered
4. customthe resulting solid recrystallized from methanol