New friedel-crafts chemistry. XXX. Acid-catalyzed cyclodehydration of some 4-benzyl-1-tetralols and 4-phenylalkanols. Rearrangement of dibenzobicyclo[3.2.2]nona-2,6-diene by aluminum chloride
Non-activated aromatic compounds bearing unsaturated side-chains afford tetralin and benzosuberan derivatives in good yields in an atom-economic, environmentally friendly process catalysed by bismuth(III) trifluromethanesulfonate.
Access to Polycyclic Derivatives by Triflate-Catalyzed Intramolecular Hydroarylation
作者:Bastien Cacciuttolo、Sophie Poulain-Martini、Fabien Fontaine-Vive、Mahmoud Ali Hussein Abdo、Hussein El-Kashef、Elisabet Duñach
DOI:10.1002/ejoc.201402972
日期:2014.11
An efficient and versatile synthesis of indane, tetralin and benzosuberan derivatives has been developed; the synthesis starts from nonactivated aromatic compounds bearing unsaturated side chains and is a bismuth(III) or indium(III) trifluoromethanesulfonate-catalysed atom-economic process. A variety of polycyclic compounds have been isolated in high yields. Lactonisation could be observed for esters
Photosensitized (electron transfer)[2e + 4e] dimerization and cross-cycloaddition of phenylated olefins: trapping the intermediate
作者:Donald R. Arnold、Robert M. Borg、Angelo Albini
DOI:10.1039/c39810000138
日期:——
If the photosensitized (electrontransfer) dimerization of 1,1-diphenylethylene or cross-cycloaddition of 1,1-diphenylethylene with methylpropene is carried out in the presence of acrylonitrile or methyl acrylate, alkylated tetrahydronaphthalenes are obtained, consistent with trapping of the intermediate triene via an ‘ene’ reaction.