| | 第 39 卷第 5 期 |  | Vol. 39 No. 5 |  | 2009 年 10 月 | Oct 2009 | 
 
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| 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
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| 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 | 
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| 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 | 
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| 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) 
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| 收稿日期:2009-08-31 
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