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Group-transfer polymerization. 1. A new concept for addition polymerization with organosilicon initiators
Polymerisation du methacrylate de methyle avec l'acetal de dimethylcetone methyl trimethylsilyle. Reaction rapide a temperature ambiante conduisant a un polymere vivant de distribution etroite de laExpand
Ligand Electronic Effects in Asymmetric Catalysis - Enhanced Enantioselectivity in the Asymmetric Hydrocyanation of Vinylarenes
The enantioselectivity of the nickel-catalyzed, asymmetric hydrocyanation of vinylarenes using glucose- derived, chiral phosphinite ligands, L, increases dramatically when the ligands containExpand
Conformation and reactivity in dibenzocyclooctadienes (DBCOD). A general approach to the total synthesis of fully substituted DBCOD lignans via borostannylative cyclization of α,ω-diynes
Dibenzocyclooctadienes (DBCOD) are a class of plant-derived natural products that exhibit a broad range of biological activities. These include cytotoxicity, anti-hepatitis-B activity, inhibition ofExpand
Selective Generation of Free Radicals from Epoxides Using a Transition-Metal Radical. A Powerful New Tool for Organic Synthesis
Bis(cycIopentadienyl)titanium(III) chloride reacts with epoxides by initial C-0 homolysis. The regiochemistry of the opening is determined by the relative stabilities of the radicals. Depending onExpand
Asymmetric hydrovinylation reaction.
Carbon-carbon bond-forming reactions are among the most important types of bond constructions in organic chemistry. Yet, the paucity of methods for the stereoselective incorporation of abundantlyExpand
Transition-metal-centered radicals in organic synthesis. Titanium(III)-induced cyclization of epoxy olefins
We wish to report a solution to this problem which allows the direct synthesis of functionalized cyclopentane derivatives. This new reaction is based on an analogy to the extremely facileExpand
Regiodivergent Ring Opening of Chiral Aziridines
A bimetallic catalyst selects different ring-opening sites, depending on the chiral configuration of the substrate. Kinetic resolution of strained three-membered rings has proven broadly useful forExpand
Asymmetric hydrovinylation of unactivated linear 1,3-dienes.
Monosubstituted acyclic (E)-1,3-dienes undergo efficient hydrovinylation giving (Z)-3-alkylhexa-1,4-dienes upon treatment with catalytic amounts of bidentate phosphine-CoCl(2) complexesExpand
Enantioselective desymmetrization of meso-aziridines with TMSN3 or TMSCN catalyzed by discrete yttrium complexes.
using a variety ofnucleophiles have been the subject of extensive research. Theless developed ring-opening reactions, those of meso-aziri-dines by carbon and nitrogen nucleophiles, give directExpand