Conformational analysis of olefin-carbene ruthenium metathesis catalysts [PDF]
, 2009 We settle a long-standing disagreement of DFT with experiment (both solution and gas phase) for the phosphine dissociation process in Grubbs metathesis catalysis. Our findings with the M06 functional provide further support to gas-phase experimental work,
Benitez, Diego +2 more
core +1 more source
Bidentate N,O-prolinate ruthenium benzylidene catalyst highly active in RCM of disubstituted dienes [PDF]
, 2007 The synthesis of a bidentate N,O-prolinate ruthenium benzylidene from commercially available starting materials and its activity in ring-closing metathesis of functionalized disubstituted dienes at 30 °C is ...
Grubbs, Robert H., Samec, Joseph S. M.
core +3 more sources
Rh(II)-Catalysed Condensations of N-Sulfonyl-1,2,3-triazoles with Aminals
SynOpen, 2021 Nidal Saleh, Jérôme Lacour
doaj +1 more source
Gas-grain models for interstellar anion chemistry
, 2012 Long-chain hydrocarbon anions CnH- (n=4, 6, 8) have recently been found to be abundant in a variety of interstellar clouds. In order to explain their large abundances in the denser (prestellar/protostellar) environments, new chemical models are ...
Brown +33 more
core +1 more source
The development and use of novel iridium complexes as catalysts for ortho-directed hydrogen isotope exchange reactions [PDF]
, 2010 The preparation and application of groups of new iridium complexes are described. In particular, iridium complexes possessing phosphine ligands and a bulky N-heterocyclic carbene have been shown to be robust and readily handled species and have been ...
Atzrodt +42 more
core +1 more source
The synthesis of functionalized bridged polycycles via C–H bond insertion
Beilstein Journal of Organic Chemistry, 2016 This review presents examples from the chemical literature of syntheses of bridged-polycyclic products via C–H bond insertion by carbenes and nitrenes.
Jiun-Le Shih, Po-An Chen, Jeremy A. May
doaj +1 more source
Molecules, 2010 An efficient and stereoselective catalytic system for the Heck cross coupling reaction using novel 1,3-dialkyl-3,4,5,6-tetrahydropyrimidinium salts (1, LHX) and Pd(OAc)2 loading has been reported.
İsmail Özdemir +4 more
doaj +1 more source
Two-Dimensional Controlled Syntheses of Polypeptide Molecular Brushes via N-Carboxyanhydride Ring-Opening Polymerization and Ring-Opening Metathesis Polymerization. [PDF]
, 2017 Well-defined molecular brushes bearing polypeptides as side chains were prepared by a "grafting through" synthetic strategy with two-dimensional control over the brush molecular architectures.
Borguet, Yannick P +7 more
core +1 more source
N‐Heterocyclic Carbene Organocatalysis: With or Without Carbenes?
Chemistry – A European Journal, 2020 AbstractIn this work the mechanism of the aldehyde umpolung reactions, catalyzed by azolium cations in the presence of bases, was studied through computational methods. Next to the mechanism established by Breslow in the 1950s that takes effect through the formation of a free carbene, we have suggested that these processes can follow a concerted ...
Sascha Gehrke, Oldamur Hollóczki
openaire +2 more sources
Alkynyltriazenes in Photochemical Metal‐Free Doyle–Kirmse Rearrangements
Angewandte Chemie International Edition, EarlyView.A metal‐ and additive‐free photocatalytic Doyle–Kirmse reaction of alkynyl triazenes is described, proceeding via cyanocarbene intermediates. This strategy enables the efficient construction of highly substituted asymmetric carbon centers with broad substrate scope, delivering synthetically valuable nitriles.
Ningning Liu +7 more
wiley +1 more source