Solvent-free synthesis of 4-aryl-3,4-dihydrobenzopyran-2-ones via [3+3] cyclocoupling of phenols with cinnamic acid catalyzed by molecular iodine

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• 作者：Durga P. Kamat ; Santosh G. Tilve ; Vijayendra P. Kamat
• 关键词：3 ; 4-Dihydrobenzopyran-2-one ; Iodine ; Solvent-free ; Phenol ; Cinnamic acid
• 刊名：Tetrahedron Letters
• 出版年：2012
• 出版时间：15 August, 2012
• 年：2012
• 卷：53
• 期：33
• 页码：4469-4472
• 全文大小：927 K

文摘

Molecular iodine was used as a catalyst in the [3+3] cyclocoupling of phenols and cinnamic acids which proceeds via a tandem esterification-hydroarylation process at 120-130 ¡ãC under solvent-free conditions. Substituted 4-aryl-3,4-dihydrobenzopyran-2-ones were obtained in good yields.