107441-83-8Relevant articles and documents
Oxidative Addition to Palladium(0) Made Easy through Photoexcited-State Metal Catalysis: Experiment and Computation
Kancherla, Rajesh,Muralirajan, Krishnamoorthy,Maity, Bholanath,Zhu, Chen,Krach, Patricia E.,Cavallo, Luigi,Rueping, Magnus
supporting information, p. 3412 - 3416 (2019/01/16)
Visible-light induced, palladium catalyzed alkylations of α,β-unsaturated acids with unactivated alkyl bromides are described. A variety of primary, secondary, and tertiary alkyl bromides are activated by the photoexcited palladium metal catalyst to provide a series of olefins at room temperature under mild reaction conditions. Mechanistic investigations and density functional theory (DFT) studies suggest that a photoinduced inner-sphere mechanism is operative in which a barrierless, single-electron transfer oxidative addition of the alkyl halide to Pd0 is key for the efficient transformation.
REACTIVITY OF 1-CYCLOPROPENE-1-LACTONES DEPENDENT ON THE SUSBSTITUTION DEGREE
Hashem, Md. Abul,Weyerstahl, Peter
, p. 2003 - 2010 (2007/10/02)
Reaction of the α-chloro lactone 10 with KOtBu gives the butoxy lactones 21 and 22; the seven membered derivative 11 leads 23 as the only isolable product.Formation of the α-substitution product 21 as well as the enhanced instability of the intermediates 12 and 13 in comparison to their methyl substituted homologues 5 and 6 show the kinetical stabilization by a methyl group at C-2.Products derived from a cyclopropeno lactone of type A could not be detected.
