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N-Heterocyclic and Mesoionic Carbene Complexes of Rhodium and Palladium: Coordination Chemistry and Catalysis
(2015-05-04)
Dimeric rhodium N-heterocyclic carbene (NHC) complexes [Rh(NHC)(C2H4)Cl]2 react with a variety of other neutral donors to form heteroleptic complexes [(L)Rh(NHC)(C2H4)Cl] (L = phosphine, pyridine) or [(L)Rh(NHC)Cl] (L = ...
Enantiospecific, Regioselective Suzuki-Miyaura Cross-Couplings of Secondary, Allylic Boronic Esters
(2013-11-14)
The stereochemical course of the Pd–catalyzed Suzuki-Miyaura cross-coupling of α-substituted, enantioenriched allylic boronic esters with phenyl iodide has been examined. The secondary boronic esters were prepared in both ...
Highly Selective Rhodium-Catalyzed C-H Borylations in Preparation of Substrates for Suzuki-Miyaura Cross-Couplings: Mono- and Chemoselective Formation of Aromatic Compounds
(2015-03-27)
The advent of the Suzuki–Miyaura cross–coupling reaction and its significance to the synthesis of new carbon–carbon bonds has increased the demand for efficient routes to organoboron starting materials. C–H borylation ...
Transition metal catalyzed hydroborations with pinacolborane: new applications and mechanistic investigations
(2007-09-12)
A methodology for the catalytic asymmetric hydroboration of vinylarenes with pinacolborane has been developed. Use of pinacolborane in hydroboration, especially catalytic asymmetric hydroboration grants direct access to ...
Density functional theory investigation into mechanisms of metal ion-promoted and base-promoted phosphorothioate cleavage reactions and Lanthanide ion catalysts for kinetic resolution of amino acid esters
(2012-01-17)
Described here are chiral Ln3+ complexes of Schiff-base ligands and their use as catalysts for the kinetic resolution of the 4-nitrophenyl esters of N-Boc glutamine and phenylalanine through an enantioselective ...
Borenium Cations as Catalysts for the Reduction of Organic Molecules and Mechanistic Investigations into their Mode of Operation
(2012-10-13)
The generation and isolation of two novel borenium cations has been described. The observation that the reaction of the Lewis acid B(C6F5)3 and the Lewis base diazabicyclo[2.2.2]octane (DABCO) with pinacol borane (HBpin) ...
Studies of the Coordination Chemistry and Catalytic Activity of Rhodium and Ruthenium N-Heterocyclic Carbene Complexes
(2010-09-17)
The side-on dioxygen adducts of N-heterocyclic carbene (NHC) containing rhodium complexes, [ClRh(IPr)2(O2)] and [ClRh(IMes)2(O2)], previously synthesized in our laboratories possess a square planar geometry and O-O bond ...
Investigations into Carbon-Based Lewis Acids for Frustrated Lewis Pair Catalysis
Over the past decade, significant advancements in main group chemistry have led to an exciting renaissance in the field. The pioneering discoveries made in the mid 2000s by Dr. Stephan and Dr. Erker have paved the way for ...
Investigations into the Synthesis of Multiply Arylated Alkanes through Iterative Cross-Coupling
The palladium-catalyzed Suzuki-Miyaura cross-coupling, in which a carbon-carbon bond is formed between an organohalide or pseudo-halide electrophile and an organoboron nucleophile, has developed into one of the most widely ...
Investigations of a New and Improved Precataylst for Palladium Catalyzed Cross Coupling Reactions
(2013-07-02)
Little attention has been given to the formation of the putative PdL2
species required for Pd-catalyzed cross-coupling reactions. Active species are
generally difficult to store due to air-sensitivity and are therefore ...