THE USE OF ORTHO-CHELATING ARENETHIOLATE NONTRANSFERABLE GROUPS IN THE COPPER(I) CATALYZED SELECTIVE ALPHA-SUBSTITUTION OR GAMMA-SUBSTITUTION OF ACYCLIC ALLYLIC SUBSTRATES WITH GRIGNARD-REAGENTS
M. Vanklaveren et al., THE USE OF ORTHO-CHELATING ARENETHIOLATE NONTRANSFERABLE GROUPS IN THE COPPER(I) CATALYZED SELECTIVE ALPHA-SUBSTITUTION OR GAMMA-SUBSTITUTION OF ACYCLIC ALLYLIC SUBSTRATES WITH GRIGNARD-REAGENTS, Tetrahedron letters, 35(32), 1994, pp. 5931-5934
Ortho-amino arenethiolatocopper(I) compounds are excellent catalysts f
or the cross-coupling reaction of Grignard reagents with acyclic allyl
ic substrates. For example, reaction of n-BuMgI with geranyl acetate i
n Et(2)O at 0 degrees C yields quantitatively the gamma substitution p
roduct, whereas the same reaction in THF at -30 degrees C affords sele
ctively the a substitution product.