Asymmetric Induction in the Arenethiolatocopper(I)-Catalyzed Substitution Reaction of Grignard Reagents with Allylic Substrates
作者:Gerrit J. Meuzelaar、A.Sofia E. Karlström、Mayra van Klaveren、Eva S.M. Persson、Amaya del Villar、Gerard van Koten、Jan-E. Bäckvall
DOI:10.1016/s0040-4020(00)00145-9
日期:2000.4
experimental parameters on the regio- and enantioselectivity in the γ-selective substitution reaction of Grignard reagents RMgX with acyclic allylic acetates catalyzed by the arenethiolatocopper(I) complex (S)-1 was studied. When more bulky arenethiolatocopper(I) complexes than (S)-1 were employed in a reaction of allylic acetate 3 with n-BuMgI, the enantioselectivities observed for the γ-product were
A dual regiocontrol in the copper-catalysed Grignard reaction with primary allylic acetates
作者:Jan-E. Bäckvall、Michael Sellén
DOI:10.1039/c39870000827
日期:——
The reaction of primary allylicacetates with Grignard reagents in the presence of catalytic amounts of Li2CuCl4 can be regiochemicallycontrolled to give either α- or γ-substitution of the allylic acetoxy group.
The use of ortho-chelating arenethiolate non-transferable groups in the copper(I) catalyzed selective α or γ substitution of acyclic allylic substrates with grignard reagents
作者:Mayra van Klaveren、Eva S.M. Persson、David M. Grove、Jan-E. Bäckvall、Gerard van Koten
DOI:10.1016/s0040-4039(00)78222-0
日期:1994.8
Ortho-amino arenethiolatocopper(I) compounds are excellent catalysts for the cross-coupling reaction of Grignard reagents with acyclic allylic substrates. For example, reaction of n-BuMgI with geranyl acetate in Et(2)O at 0 degrees C yields quantitatively the gamma substitution product, whereas the same reaction in THF at -30 degrees C affords selectively the a substitution product.
van Klaveren Mayra, Persson Eva S. M., Grove David M., Baeckvall Jan-E., +, Tetrahedron Lett, 35 (1994) N 32, S 5931-5934
作者:van Klaveren Mayra, Persson Eva S. M., Grove David M., Baeckvall Jan-E., +
DOI:——
日期:——
BACKVALL J. -E.; SELLEN M., J. CHEM. SOC. CHEM. COMMUN.,(1987) N 11, 827-829