The kinetics of the reactions of the azodicarboxylates 1 with the enamines 2 have been studied in CH3CN at 20 °C. The reactions follow a second‐order rate law and can be described by the linearfreeenergyrelationship log k2(20 °C)=s(N+E) (E=electrophilicity parameter, N=nucleophilicity parameter, and s=nucleophile‐specific slope parameter). With E parameters from −12.2 to −8.9, the electrophilic
Kinetic Profiling of Prolinate-Catalyzed α-Amination of Aldehydes
作者:Jason E. Hein、Alan Armstrong、Donna G. Blackmond
DOI:10.1021/ol201639z
日期:2011.8.19
Deconvolution of the role of off-cycle species from the desired catalytic cycle leads to an optimized protocol for the prolinate-catalyzed amination of aldehydes. The scope of complex reaction networks will be greatly broadened by understanding ancillary rate processes that influence the productive catalytic pathway.
EGGER, N.;HOESCH, L.;DREIDING, A. S., HELV. CHIM. ACTA, 1983, 66, N 5, 1416-1426
作者:EGGER, N.、HOESCH, L.、DREIDING, A. S.
DOI:——
日期:——
3,3-Dialkyltriazencarbonsäure-Derivate durch oxydative Hydro-Acyl-Elimination von 3,3-Dialkyltriazan-1,2-dicarbonsäure-Derivaten
作者:Notker Egger、Lienhard Hoesch、André S. Dreiding
DOI:10.1002/hlca.19830660510
日期:1983.7.27
3,3-Dialkyltriazenecarboxylic Derivatives by Oxidative Hydro-Acyl-Elimination from 3,3-Dialkyltriazane-1,2-dicarboxylic Derivatives