One-pot synthesis of unsymmetrical benzils from aryl methyl ketones and arenes in the presence of selenous acid catalysed by p-toluenesulfonic acid monohydrate

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• 作者：Icydora Kharkongor ; Md. Rumum Rohman ; Bekington Myrboh ; ^{bmyrboh@nehu.ac.in}
• 关键词：Unsymmetrical benzils ; Selenous acid ; p-TsOH· ; H2O catalyst
• 刊名：Tetrahedron Letters
• 出版年：2012
• 期刊代码：109_00404039
• 类别：ch
• 出版时间：6 June, 2012
• 卷：53
• 期：23
• 页码：2837-2841
• 文件大小：1790 K

摘要

A modified one-pot method for the synthesis of unsymmetrical and heteroaryl benzils from substituted acetophenones and unactivated or weakly activated arenes by the use of H₂SeO₃ and p-TsOH路H₂O as catalysts at 35 掳C is established. The present method is regioselective and avoids the use of p-TsOH路H₂O in stoichiometric amount in the presence of H₂SeO₃ and afforded unsymmetrical benzils in good yields.