微波法制备木犀草素

Preparation of Luteolin by Microwave Irradiation

报道了在碱性水溶液中,利用微波辐射,以保险粉(Na2S2O4)还原芦丁制备木犀草素的反应。采用功率为250 W条件下,加热回流1 h(20 min×3),收率67%。与已知方法相比,本法原料易得,操作简单,工艺稳定,反应时间短,收率较好。同时,对微波加热的机制和优点进行了分析和总结。

Rutin was reduced to luteolin by dithionite with microwave irradiation in aqueous sodium hydroxide solution.The yield of luteolin was 67% when the mixture was refluxed for twenty minutes under 250 W for three times.The method of preparation of luteolin is convenient and timesaving with high yield.At the same time,the advantage and mechanism of heating have also been discussed.