Convenient Access to Polysubstituted 1-Indanones by Sc(OTf)<sub>3</sub>-Catalyzed Intramolecular Friedel−Crafts Acylation of Benzyl Meldrum's Acid Derivatives
作者:Eric Fillion、Dan Fishlock
DOI:10.1021/ol035817m
日期:2003.11.1
The intramolecular Friedel-Crafts acylation of benzyl Meldrum's acids is catalyzed by Sc(OTf)(3) under mild reaction conditions. Several polysubstituted 1-indanones have been prepared.
Meldrum's Acids as Acylating Agents in the Catalytic Intramolecular Friedel−Crafts Reaction
作者:Eric Fillion、Dan Fishlock、Ashraf Wilsily、Julie M. Goll
DOI:10.1021/jo0483724
日期:2005.2.1
dialkyl thioether, aryl methyl ether, aryl TIPS and TBDPS ethers, nitrile- and nitro-substituted aryls, alkyl and aryl halides) for a variety of 5-benzyl (enolizable Meldrum's acids) and 5-benzyl-5-substituted Meldrum's acids (quaternized Meldrum's acids), forming 1-indanones and 2-substituted-1-indanones, respectively, are delineated. This method was further applied to the synthesis of 1-tetralones,