Tetrahedron Letters

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

DP Kamat, SG Tilve, VP Kamat

文献索引：Kamat, Durga P.; Tilve, Santosh G.; Kamat, Vijayendra P. Tetrahedron Letters, 2012 , vol. 53, # 33 p. 4469 - 4472

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被引用次数: 19

摘要

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° C under solvent-free conditions. Substituted 4-aryl-3, 4-dihydrobenzopyran-2-ones were obtained in good yields.