Preyssler catalyst: An efficient catalyst for esterification of cinnamic acids with phenols and imidoalcohols
Preyssler catalyst: An efficient catalyst for esterification of cinnamic acids with phenols and imidoalcohols
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Preyssler催化剂：肉桂酸与苯酚和亚氨基醇酯化的高效催化剂
DOI：
10.1016/j.apcata.2009.11.037
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发表时间：
2010
期刊：
影响因子：
--
通讯作者：
J. Autino
中科院分区：
文献类型：
--
作者：
D. Ruiz;G. Romanelli;P. Vázquez;J. Autino
本文研究了一系列环保型Preyssler固体酸及其盐H14[NaP5W29MoO110](PW)、H14[NaP5W30O110](PWMo)、K12.5Na1.5[NaP5W30O110]·15H2O(PWK)、K12.5Na1.5[NaP5W29MoO110]·15H2O(PWMoK)和10%二氧化硅负载的H14[NaP5W29MoO110](PWSiO)和H14[NaP5W30O110](PWMoSiO)催化肉桂酸与苯酚或邻苯二甲酰亚胺乙醇的直接酯化反应。考察了反应温度、反应时间、催化剂种类和用量等因素对反应的影响。用漫反射光谱、傅里叶变换红外光谱、光学和扫描电子显微镜、X射线衍射等技术对这些固体进行了表征。标题反应的最佳催化剂为H14[NaP5W30O110](PWMo)。该催化剂用于各种取代肉桂酸酯的合成，得到了很好的产率。
In the present work a series of eco-friendly Preyssler solid acids and their salts H14[NaP5W29MoO110] (PW), H14[NaP5W30O110] (PWMo), K12.5Na1.5[NaP5W30O110]·15H2O (PWK), K12.5Na1.5[NaP5W29MoO110]·15H2O (PWMoK) and 10% silica-supported H14[NaP5W29MoO110] (PWSiO2), and H14[NaP5W30O110] (PWMoSiO2) have been used as catalysts for the direct esterification of cinnamic acids with phenols or 2-(N-phthalimidoethanol). Effects of the reaction conditions were studied, including temperature, reaction time, and type and amount of catalyst. These solids were characterized by several techniques, such as diffuse reflectance spectroscopy, Fourier transformed infrared spectroscopy, optical and scanning electron microcopies, and X-ray diffraction, among others. The most adequate catalyst for performing the title reaction was H14[NaP5W30O110] (PWMo). The catalyst was applied for the synthesis of various substituted cinnamates, giving very good yields.