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
Index: Kamat, Durga P.; Tilve, Santosh G.; Kamat, Vijayendra P. Tetrahedron Letters, 2012 , vol. 53, # 33 p. 4469 - 4472
Full Text: HTML
Citation Number: 19
Abstract
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.
Related Articles:
[Jagdale, Arun R.; Sudalai, Arumugam Tetrahedron Letters, 2007 , vol. 48, # 28 p. 4895 - 4898]
Microwave-assisted one-pot synthesis of dihydrocoumarins from phenols and cinnamoyl chloride
[Zhang, Zhen; Ma, Yuan; Zhao, Yufen Synlett, 2008 , # 7 p. 1091 - 1095]
Selective synthesis of 3, 4-dihydrocoumarins and chalcones from substituted Aryl Cinnamic Esters
[Jeon, Jae-Ho; Yang, Deok-Mo; Jun, Jong-Gab Bulletin of the Korean Chemical Society, 2011 , vol. 32, # 1 p. 65 - 70]
Selective synthesis of 3, 4-dihydrocoumarins and chalcones from substituted Aryl Cinnamic Esters
[Jeon, Jae-Ho; Yang, Deok-Mo; Jun, Jong-Gab Bulletin of the Korean Chemical Society, 2011 , vol. 32, # 1 p. 65 - 70]