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以可再生生物质资源莽草酸为原料, 在经酯化和2-碘酰基苯甲酸(IBX)氧化制得3-脱氢莽草酸甲酯的基础上, 研究了在不同反应溶剂中和不同反应温度下, 3-脱氢莽草酸甲酯分别与水合肼、 乙酰肼、 苯肼和乙酰胺选择性地得到非芳构化、 部分芳构化和芳构化产物的反应. 该方法具有选择性高、 操作简单和条件温和等优点, 为可再生非粮生物质资源莽草酸的利用提供了一种新的思路. 相似文献
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3-脱氢莽草酸甲酯与丙二腈、氰乙酸乙酯及氰乙酸甲酯等活性亚甲基化合物在一定条件下发生缩合、芳构化及环合反应,可方便地构建C—C键并得到多取代的2-氨基苯并呋喃类化合物(3a~3e,4a和4b),其中化合物3a中的氰基和甲氧羰基可分别进行选择性水解.该方法具有原料易得、条件温和、操作简单及收率高等优点,为可再生生物质资源莽草酸的多样化转化和利用提供了新思路. 相似文献
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A three-dimensional(3 D) Cd-based metal-organic framework(MOF), [Cd(H2 O)(PAA)]·(H2 O)2(complex 1) has been rationally designed and synthesized by using 4-(pyrimidin-5-yl)isophthalic acid(H2 PAA) and Cd(NO3)2·4 H2 O under solvothermal conditions. The structure has been determined by single-crystal X-ray diffraction analyses and further characterized by elemental analyses, IR spectra, powder X-ray diffraction(PXRD) and thermogravimetric analyses(TGA). Single-crystal X-ray diffraction analyses reveal that complex 1 consists of a 3 D network with one-dimensional(1 D) channels. Moreover, 1 exhibits strong luminescent emission in solid state at room temperature. Fluorescence quenching was observed when treating complex 1 with picric acid(PA), 2,4-dinitrophenylhydrazine(2,4-DNPH) and p-nitroaniline(p-NA), revealing that the as-synthesized complex could be used as a luminescence sensor for the detection of PA, 2,4-DNPH and p-NA. 相似文献
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