反应详情

温度

135 °C

A solution of 5-chloro-2,2,6-trimethyl-4H-1,3-dioxin-4-one (8.8 g, 50 mmol) and 4-nitrophenol (7.65 g, 55 mmol) in 5 ml of xylene under continuous nitrogen purge was immersed in an oil bath preheated to 110° C. The reaction was then heated to 135° C. and then stirred an additional 15 minutes. The pale brown reaction was cooled to 20° C. and the precipitated product washed with ether/hexanes to afford 10.9 g (84%) of the title compound as flaky, white crystals.

1. customwas immersed in an oil bath
2. custompreheated to 110° C
3. customThe pale brown reaction
4. temperaturewas cooled to 20° C.
5. washthe precipitated product washed with ether/hexanes