Results 71 to 80 of about 4,618,245 (281)
Functionalized hyperbranched polymers via olefin metathesis [PDF]
, 2009 Hyperbranched polymers are highly branched, three-dimensional macromolecules which are closely related to dendrimers and are typically prepared via a one-pot polycondensation of AB_(n≥2) monomers.^1 Although hyperbranched macromolecules lack the ...
Gorodetskaya, Irina A. +3 more
core +1 more source
Ruthenium Olefin Metathesis Catalysts Bearing an N-Fluorophenyl-N-Mesityl-Substituted Unsymmetrical N-Heterocyclic Carbene [PDF]
, 2007 Two new ruthenium-based olefin metathesis catalysts, each bearing an unsymmetrical N-heterocyclic carbene ligand, have been synthesized and fully characterized.
Grubbs, Robert H. +1 more
core +1 more source
Two‐Way Shape Memory Polymer Composite Gripper for Adaptive Robotic Applications
Advanced Materials Technologies, EarlyView.A two‐way shape memory polymer (SMP) composite is developed with intrinsic shape‐changing capability driven solely by temperature, eliminating external actuation loads. Embedding the SMP in a low‐stiffness elastomeric matrix enabled reversible transformations during heating and cooling cycles.
Aamna Hameed, Kamran Ahmed Khan
wiley +1 more source
Stereoretentive Olefin Metathesis: An Avenue to Kinetic Selectivity [PDF]
, 2017 Olefin metathesis is an incredibly valuable transformation that has gained widespread use in both academic and industrial settings. Lately, stereoretentive olefin metathesis has garnered much attention as a method for the selective generation of both E ...
Ahmed, Tonia S. +2 more
core +1 more source
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
Cross Metathesis Assisted Solid-Phase Synthesis of Glycopeptoids [PDF]
, 2012 A solid-phase synthesis of glycopeptoids was explored through olefin cross metathesis (CM). Peptoids and sugar derivatives with appropriate olefin moieties were coupled in the presence of an olefin metathesis catalyst to afford glycopeptoids in good ...
Grubbs, Robert H. +3 more
core +1 more source
Application of Olefin Cross-Metathesis to the Synthesis of Biologically Active Natural Products
, 2005 19 pages Merci a Bentam Science Publishers Ltd. d'accepter le dépôt en archives ouvertesAn overview of the use of olefin cross-metathesis in the synthesis of biologically active natural products is presented.
Prunet, Joëlle
core +2 more sources
A cross-metathesis approach to the stereocontrolled synthesis of the AB ring segment of ciguatoxin [PDF]
, 2008 Synthesis of the AB ring segments of ciguatoxin is described. The present synthesis includes a Lewis acid mediated cyclization of allylstannane with aldehyde, cross-metathesis reaction introducing the side chain, and Grieco-Nishizawa dehydration on the A
Abe, Takashi +4 more
core +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
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