Triethylborane induces allylic substrates (benzoates, phenyl ethers, benzyl
ethers, but not halides) to undergo allylation of aldehydes in the presenc
e of a catalytic amount of tetrakis(triphenylphosphine)palladium(0) The rea
ction proceeds via Umpolung of pi-allylpalladium. (C) 1999 Elsevier Science
Ltd. All rights reserved.