Regioselective Palladium-Catalyzed Electrophilic Allylic Substitution in the Presence of Hexamethylditin
作者:Olov A. Wallner、Kálmán J. Szabó
DOI:10.1021/ol0257777
日期:2002.5.1
[reaction: see text]. Palladium-catalyzed electrophilic allylicsubstitution of functionalized allyl chlorides and allyl acetates can be achieved in the presence of hexamethylditin under mild reaction conditions. The substitution reaction occurs with very high regioselectivity at the branched allylic terminus. Regioselective tandem bisallylation reaction could be performed by employing benzylidenemalonitrile
Palladium Pincer Complex-Catalyzed Allylic Stannylation with Hexaalkylditin Reagents
作者:Olov A. Wallner、Kálmán J. Szabó
DOI:10.1021/ol049328d
日期:2004.5.1
stannylation of allylchloride, phosphonate, and epoxide substrates (4a-h) could be performed with hexaalkylditin reagents (3) under mild neutral reaction conditions. This catalytic reaction proceeds via palladium(II) intermediates without involvement of allyl-palladium complexes, and therefore the allylstannane product does not interfere with the palladium catalyst. Use of a combined catalytic system (1 + 2)
Palladium-Catalyzed Electrophilic Substitution of Allyl Chlorides and Acetates via Bis-allylpalladium Intermediates
作者:Olov A. Wallner、Kálmán J. Szabó
DOI:10.1021/jo026767m
日期:2003.4.1
the application of neutral and mild reaction conditions. The substitution reaction occurs with very high regioselectivity at the branched allylic terminus. Moreover, in several reactions, a high stereoselectivity was observed indicating that this new catalytic process has a high potential for stereoselectivesynthesis. The regioselectivity of the reaction can be explained on the basis of DFT calculations