p-Toluenesulfonic acid mediated hydroarylation of cinnamic acids with anisoles and phenols under metal and solvent-free conditions
作者:Arun R. Jagdale、Arumugam Sudalai
DOI:10.1016/j.tetlet.2007.05.059
日期:2007.7
Hydroarylation of cinnamic acids with anisoles and phenols mediated by p-toluenesulfonic acid (p-TSA) under metal and solvent-free conditions gave 3-(4-methoxyphenyl)-3-phenylpropanoic acids and dihydrocoumarins, respectively, in high yields and excellent selectivity.
Solvent-free synthesis of 4-aryl-3,4-dihydrobenzopyran-2-ones via [3+3] cyclocoupling of phenols with cinnamic acid catalyzed by molecular iodine
作者:Durga P. Kamat、Santosh G. Tilve、Vijayendra P. Kamat
DOI:10.1016/j.tetlet.2012.06.069
日期:2012.8
Molecular iodine was used as a catalyst in the [3+3] cyclocoupling of phenols and cinnamicacids 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.
Palladium Catalyzed Enantioselective Hayashi–Miyaura Reaction for Pharmaceutically Important 4-Aryl-3,4-dihydrocoumarins
作者:Jixing Lai、Chen Yang、René Csuk、Baoan Song、Shengkun Li
DOI:10.1021/acs.orglett.1c04366
日期:2022.2.18
The first palladium-catalyzed asymmetric addition of arylboronic acids to coumarins was successfully established, providing a straightforward asymmetric approach to achieving pharmaceutically important 4-aryl-3,4-dihydrocoumarins. This methodology features easily accessible and bench-stable ligands, a wide substrate scope, mild conditions, and accommodation of electron-withdrawing arylboronic acids
Microwave-Assisted One-Pot Synthesis of Dihydrocoumarins from Phenols and Cinnamoyl Chloride
作者:Yuan Ma、Zhen Zhang、Yufen Zhao
DOI:10.1055/s-2008-1042921
日期:——
A facile approach has been developed for the synthesis of dihydrocoumarin derivatives through the reaction of phenols and cinnamoyl chloride in the presence of ecofriendly solid-acid catalyst montmorillonite K-10 via a tandem esterification-Friedel-Crafts alkylation process under microwave irradiation. The catalyst could be easily recovered and recycled.
Hydroarylation of cinnamic acid with phenols catalyzed by acidic ionic liquid [H-NMP]HSO4: computational assessment on substituent effect
作者:Vahideh Zadsirjan、Majid M. Heravi、Mahmoud Tajbakhsh、Hossein A. Oskooie、Morteza Shiri、Tayebeh Hosseinnejad
DOI:10.1007/s11164-016-2471-5
日期:2016.7
Hydroarylation of cinnamic acid with different substituted phenols, in the presence of acidic ionic liquid, N-methyl-2-pyrrolidonum hydrosulfate ([H-NMP]HSO4) gave the corresponding dihydrocoumarins in high yields and excellent selectivity. Among these substituted phenols, while methyl phenol afforded the corresponding dihydrocoumarin, nitrophenol under the same reaction conditions diverted the course