Superacid-catalyzed Friedel–Crafts cyclization of unactivated alkenes
摘要:
Trifluoromethanesulfonimide is an effective catalyst for Friedel-Crafts cyclizations of simple, nonpolarized alkenes with a variety of pendant arenes. A catalyst loading of 0.5 - 1.0 mol % effects clean cyclization to form 5- to 7-membered carbocycles with generally short reaction times and good to excellent yields under reflux or microwave heating. (C) 2012 Elsevier Ltd. All rights reserved.
An iridium complex with a newly prepared chiral spiro amino-phosphine ligand efficiently catalyzed the hydrogenation of both [small beta]-aryl-[small beta]-methyl-nitroalkenes and [small beta]-alkyl-[small beta]-methyl-nitroalkenes to the corresponding saturated nitroalkanes, which represents the first report...
作者:Federica Carlet、Greta Bertarini、Gianluigi Broggini、Alexandre Pradal、Giovanni Poli
DOI:10.1002/ejoc.202100026
日期:2021.4.22
An oxoammonium‐mediated α‐C(sp3) allylation of allyl‐ and benzyl ethers using allylsilanes as nucleophilic partners is disclosed. This new C−C bond forming C−H activation process allows to obtain the corresponding coupled products in moderate to good yields.
Superacid-catalyzed Friedel–Crafts cyclization of unactivated alkenes
作者:Sara A. Bonderoff、F.G. West、Martin Tremblay
DOI:10.1016/j.tetlet.2012.06.082
日期:2012.8
Trifluoromethanesulfonimide is an effective catalyst for Friedel-Crafts cyclizations of simple, nonpolarized alkenes with a variety of pendant arenes. A catalyst loading of 0.5 - 1.0 mol % effects clean cyclization to form 5- to 7-membered carbocycles with generally short reaction times and good to excellent yields under reflux or microwave heating. (C) 2012 Elsevier Ltd. All rights reserved.