AgAsF6 as safe alternative to AgClO4 for generating cationic zirconocene species: Utilities in Lewis acid-promoted selective C---C bond forming reactions

Article abstract of DOI:10.1016/0040-4020(94)01135-M

For generating cationic zirconocene species that are useful for organic synthesis, AgAsF₆ proved to be an efficient catalyst that serves as a safe alternative to AgClO₄. Scope and limitation is discussed on this new catalyst in the processes including (1) alkyl/alkenyl transfer reaction from organozirconocene chloride to aldehyde, (2) two- and four-carbon homologation of aldehyde, (3) dual synthetic methods of 1,3-dienes from aldehydes/ketones via 1,3-bimetallic species, and (4) three-component alkylative cycloaddition via o-quinodimethane species.