第 39 卷第 5 期Vol. 39 No. 5
2009 年 10 月Oct 2009

所属栏目:医药及中间体

相转移催化法合成5-羟基黄酮的研究
石 强,王作全,姚转乐,张丽洁,姬明理,樊学忠 (西安近代化学研究所,陕西 西安 710065)
摘 要:以间苯二酚为原料,经过成环、酯化、重排、开环4步反应,制得2,6-二羟基苯乙酮(1),对1进行了1H NMR表征,并对1 的合成机理进行了推测;1 与苯甲酰氯在相转移催化剂四丁基硫酸氢铵催化下进行反应,得到5-羟基黄酮(2),对2 进行了IR及1H NMR表征,并对其合成机理进行了推测。考察了相转移催化反应温度、催化剂加入量对于产品收率的影响,较佳条件为:反应温度60℃,n(1) ∶ n(四丁基硫酸氢铵)=1 ∶ 1.3,2 的收率达到65%。
关键词:5-羟基黄酮;相转移催化;2,6-二羟基苯乙酮;合成
中图分类号:R914.5 O621.3  文献标识码:A  文章编号:1009-9212(2009)05- 0047-03
Synthesis of 5-Hydroxyflavone by Phase-transfer Catalysis
SHI Qiang,WANG Zuo-quan,YAO Zhuan-le,ZHANG Li-jie,JI Ming-li,FAN Xue-zhong (Xi’an Modern Chemistry Research Institute,Xi’an 710065,China)
Abstract:Reaction of 2,6-dihydroxyacetophenone(1)with benzoyl chloride under phase-transfer catalysis by tetrabutyl ammonium bisulfate formed 5-hydroxyflavone(2) in 65% yield at 60℃ with n(1) : n(tetrabutylammoniumbisulfate) = 1 ∶ 1.3. 1 was synthesized from resorcinol in four steps including cyclization,esterification,rearrangement and ring-opening. The structures of 1 and 2 were identified by IR and 1H NMR. Mechanisms for formation of 1 and 2 were also proposed.
Key words:5-hydroxyflavone;phase-transfer catalysis;2,6-dihydroxyacetophenone;synthesis
作者简介:石 强(1967-),男,广东番禺人,高级工程师,硕士,主要从事医药及医药中间体的合成研究。(E-mail:shiqiangxa@sohu.com)
收稿日期:2009-08-31