第 44 卷第 1 期 |  | Vol. 44 No. 1 | 2014 年 2 月 | Feb 2014 |
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所屬欄目:醫藥及中間體
基于間苯二酚合成2,4-二甲氧基苯甲醛 |
馬 成,熱娜·卡斯木,阿孜古麗·買(mǎi)買(mǎi)提尼亞孜,阿不都艾合提·艾肯
(新疆醫科大學(xué) 藥學(xué)院,新疆 烏魯木齊 830011) |
摘 要:以間苯二酚為原料通過(guò)Vilsmeier醛基化和甲基化兩步反應合成2,4-二甲氧基苯甲醛。比較了醛基化和甲基化的先后順序對目標化合物收率的影響。方法一以三氯氧磷和N,N-二甲基甲酰胺(DMF)先行醛基化制備2,4-二羥基苯甲醛(收率70.4%),再以硫酸二甲酯甲基化制得目標化合物(收率4.5%)。方法二先以硫酸二甲酯或甲基碘甲基化,制備間苯二甲醚(收率分別為79.7%和30.7%),再用三氯氧磷和N-甲基甲酰苯胺(替代DMF)醛基化,以50.7%的收率得到2,4-二甲氧基苯甲醛,先甲基化再酯基化方法簡(jiǎn)便易控,目標化合物結構經(jīng)1H NMR確定。 |
關(guān)鍵詞:2,4-二甲氧基苯甲醛;Vilsmeier反應;合成 |
中圖分類(lèi)號:O625.45;TQ244.1 文獻標識碼:A 文章編號:1009-9212(2014)01-0019-03 |
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Synthesis of 2,4-Dimethoxybenzaldehyde |
MA Cheng,RENA Kasimu,AZIGULI Maimaitiniyazi,ABUDUAIHETI Aiken
(School of Pharmacy,Xinjiang Medical University,Urumqi 830011,China) |
Abstract:2,4-Dimethoxybenzaldehyde was synthesized from resorcinol via Vilsmeier reaction and methylation. Two different reaction ways were studied. 1)Resorcinol was reacted with POCl3 and DMF to form 2,4-dihydroxybenzaldehyde,which was further reacted with dimethyl sulfate to get the final product. 2)Resorcinol was firstly reacted with dimethyl sulfate and methyl iodide,and then further reacted with POCl3 and N-methyl formanilide to form the target product. The overall yield of the product from the second way(50.7%)was higher than that from the first way(31.7%). The final product structure was confirmed by 1H NMR. |
Key words:2,4-methoxybenzaldehyde;Vilsmeier reaction;synthesis |
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基金項目: 新疆自然科學(xué)基金青年基金項目(編號2011211B21),新疆高?蒲杏媱澲攸c(diǎn)項目(編號XJEDU2011I35)。
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作者簡(jiǎn)介:馬 成(1976-),男,副教授,博士,主要從事天然產(chǎn)物活性成分結構修飾與合成研究。(E-mail:mac2008hk@126.com)
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收稿日期:2013-11-20
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