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Friedel-crafts acylation process in ionic liquids
Friedel-crafts acylation process in ionic liquids
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机译:离子液体中的Friedel-crafts酰化工艺
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摘要
A preparation process of aromatic ketones by a Friedel-Crafts acylation reaction in an ionic liquid of formula (I), in the absence of any other catalyst and/or solvent. In formula (I), [Q]+ is selected from substituted-imidazolium cations, substituted-pyridinium cations, ammonium cations, and phosponium cations. It allows to carry out Friedel-Crafts acylations with good yields and high selectivity in para position of the Friedel-Crafts aromatic substrate without using chlorine-containing solvents and conventional Friedel-Crafts catalysts. It is industrially useful because provides a “Green Chemistry” technology for carrying out Friedel-Crafts acylations of general aplicability.[Q]+[CF3SO3]− (I)
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机译:在不存在任何其他催化剂和/或溶剂的情况下,通过在式(I)的离子液体中的Friedel-Crafts酰化反应来制备芳族酮的方法。在式(I)中,[Q] + Sup>选自取代的咪唑鎓阳离子,取代的吡啶鎓阳离子,铵阳离子和磷鎓阳离子。它允许在Friedel-Crafts芳族底物的对位上以良好的产率和高选择性进行Friedel-Crafts酰化,而无需使用含氯溶剂和常规的Friedel-Crafts催化剂。它在工业上很有用,因为它提供了一种“绿色化学”技术来进行通用的Friedel-Crafts酰化反应。<?in-line-formulae description =“在线表达式” end =“ lead”?> [Q] + Sup> [CF 3 Sub> SO 3 Sub>] − Sup>(I)<?in-line-formulae description =“在线表达式” end =“ tail”?>
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