o-DPPB-Directed Copper-Mediated and -Catalyzed Allylic Substitution with Grignard Reagents
作者:Peter Demel、Manfred Keller、Bernhard Breit
DOI:10.1002/chem.200600225
日期:2006.8.25
explored as a directing leaving group in copper-mediated and copper-catalyzed allylicsubstitution with Grignardreagents. Complete control of chemo-, regio- and stereoselectivity with complete syn-1,3-chirality transfer was observed as a result of the directed nature of the reaction. No excess of organometallic reagent is required and the directing group can be recovered quantitatively. Coordination
Stereospecific and Stereodivergent Construction of Quaternary Carbon Centers through Switchable Directed/Nondirected Allylic Substitution
作者:Bernhard Breit、Peter Demel、Christopher Studte
DOI:10.1002/anie.200453991
日期:2004.7.19
Whitmore; Stahly, Journal of the American Chemical Society, 1945, vol. 67, p. 2159
作者:Whitmore、Stahly
DOI:——
日期:——
Trans alkenes and vinylsilanes from trans-α-stannyl epoxides
作者:John A. Soderquist、Carlos Lopez
DOI:10.1016/0040-4039(91)80153-w
日期:1991.10
The reaction of trans-alpha-epoxystannanes (1) with an excess of alkyllithium reagents was found to undergo reductive alkylation cleanly to provide trans alkenes (3) whose isomeric purities equal or exceed those of 1. A mechanistic picture for this process which involves a carbenoid intermediate is presented.
MULZER, J.;BRUENTRUP, G., CHEM. BER., 1982, 115, N 6, 2057-2075