Results 41 to 50 of about 5,480 (194)
Advanced Optical Materials, EarlyView.Associating a chiral bent core liquid crystal molecule, that self‐assembles into helical nanofilaments, with an achiral red‐NIR phosphorescent octahedral molybdenum cluster produces a hybrid material exhibiting efficient red‐NIR circularly polarized emission under UV excitation.
Jeanne Rebours +6 more
wiley +1 more source
Computational study of productive and non-productive cycles in fluoroalkene metathesis
Beilstein Journal of Organic Chemistry, 2015 A detailed DFT study of the mechanism of metathesis of fluoroethene, 1-fluoroethene, 1,1-difluoroethene, cis- and trans-1,2-difluoroethene, tetrafluoroethene and chlorotrifluoroethene catalysed with the Hoveyda–Grubbs 2nd generation catalyst was ...
Markéta Rybáčková +4 more
doaj +1 more source
Advanced Science, EarlyView.A new data‐efficient framework combining DFT calculations, a neural network model, and automated graph analysis of catalytic reaction networks is proposed and applied to CO2 hydrogenation on transition metal nanoparticles. The analysis shows how efficient C2 oxygenate production requires a balance between CHx formation, C–C coupling, protonation, and ...
Mikhail V. Polynski, Sergey M. Kozlov
wiley +1 more source
Microwave-assisted cross-metathesis of acrylonitrile
Comptes Rendus. Chimie, 2009 Microwave irradiation combined with the Hoveyda–Grubbs phosphine-free ruthenium-based precatalyst allows cross-metathesis reactions of acrylonitrile.
Boddaert, Thomas +2 more
openaire +2 more sources
Supported Catalysts Useful in Ring-Closing Metathesis, Cross Metathesis, and Ring-Opening Metathesis Polymerization [PDF]
Polymers, 2016 Ruthenium and molybdenum catalysts are widely used in synthesis of both small molecules and macromolecules. While major developments have led to new increasingly active catalysts that have high functional group compatibility and stereoselectivity, catalyst/product separation, catalyst recycling, and/or catalyst residue/product separation remain an ...
Jakkrit Suriboot +2 more
openaire +2 more sources
Beilstein Journal of Organic Chemistry, 2021 This work presents an examination of the selective functionalization of norbornadiene through nitrile oxide 1,3-dipolar cycloaddition/ring-opening metathesis (ROM)/cross-metathesis (CM) protocols. Functionalization of commercially available norbornadiene
Zsanett Benke +2 more
doaj +1 more source
Template-Directed Olefin Cross Metathesis
Organic Letters, 2005 [reaction: see text] A template containing two secondary dialkylammonium ion recognition sites for encirclement by olefin-bearing dibenzo[24]crown-8 derivatives has been used to promote olefin cross metatheses with ruthenium-alkylidene catalysts.
Stuart J, Cantrill +8 more
openaire +4 more sources
Total synthesis of the indolizidine alkaloid tashiromine
Beilstein Journal of Organic Chemistry, 2008 BackgroundTashiromine (1) is a naturally occurring indolizidine alkaloid. It has been the subject of thirteen successful total syntheses to date. Our own approach centres on the stereoselective construction of the indolizidine core by capture of an ...
Stephen P. Marsden, Alison D. McElhinney
doaj +1 more source
Beilstein Journal of Organic Chemistry, 2015 A silver-free methodology was developed for the synthesis of unprecedented N-heterocyclic carbene ruthenium indenylidene complexes bearing a bidentate picolinate ligand.
Thibault E. Schmid +6 more
doaj +1 more source
Light-induced olefin metathesis
Beilstein Journal of Organic Chemistry, 2010 Light activation is a most desirable property for catalysis control. Among the many catalytic processes that may be activated by light, olefin metathesis stands out as both academically motivating and practically useful.
Yuval Vidavsky, N. Gabriel Lemcoff
doaj +1 more source