Results 31 to 40 of about 17,341 (257)
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
Ring closing metathesis in protic media by means of a neutral and polar ruthenium benzylidene complex [PDF]
, 2002 The ring closing olefine metathesis in protic solvents using a new ruthenium benzylidene complex is ...
Grubbs, Robert H., Rölle, Thomas
core +1 more source
Natural Product Communications, 2017 Metathesis reactions is firmly established as a valuable synthetic tool in organic chemistry, clearly comparable with the venerable Diels-Alder and Wittig reactions and, more recently, with the metal-catalyzed cross-coupling reactions.
Silvia Roscales, Joaquín Plumet
doaj +1 more source
Functional metathesis catalyst through ring closing enyne metathesis: one pot protocol for living heterotelechelic polymers [PDF]
, 2018 Enyne ring closing metathesis has been used to synthesize functional group carrying metathesis catalysts from a commercial (Ru-benzylidene) Grubbs’ catalysts.
Kilbinger, Andreas F. M. +3 more
core +1 more source
One-pot synthesis of 5-amino-2,5-dihydro-1-benzoxepines: access to pharmacologically active heterocyclic scaffolds [PDF]
, 2015 A one-pot multibond-forming process involving a thermally mediated Overman rearrangement and a ring closing metathesis reaction of allylic trichloroacetimidates bearing a 2-allyloxyaryl group has been developed for the synthesis of 5-amino-substituted 2 ...
Calder, Ewen D.D. +3 more
core +2 more sources
Angewandte Chemie, EarlyView.This review highlights recent advances in integrating biocatalysis and chemocatalysis in continuous flow to create streamlined, sustainable processes. It examines chemo‐enzymatic cascades combining at least one enzymatic and one chemical step, discusses challenges such as enzyme immobilization, leaching, and reactor clogging, and presents solutions ...
Petros Siasiaridis +2 more
wiley +2 more sources
Olefin metathesis in nano-sized systems
Beilstein Journal of Organic Chemistry, 2011 The interplay between olefin metathesis and dendrimers and other nano systems is addressed in this mini review mostly based on the authors’ own contributions over the last decade.
Didier Astruc +7 more
doaj +1 more source
Synthesis of Highly Stable 1,3-Diaryl-1H-1,2,3-triazol-5-ylidenes and Their Applications in Ruthenium-Catalyzed Olefin Metathesis [PDF]
, 2011 The formal cycloaddition between 1,3-diaza-2-azoniaallene salts and alkynes or alkyne equivalents provides an efficient synthesis of 1,3-diaryl-1H-1,2,3-triazolium salts, the direct precursors of 1,2,3-triazol-5-ylidenes.
Bertrand, Guy +6 more
core +2 more sources
The Far Side of Carboranes: Anticancer Active Monocations and Ambiently Stable Dications
Angewandte Chemie, EarlyView.This work describes the synthesis of bench‐stable dicationic carboranes. Their enhanced electrophilicity is documented by opening the clusters with weak nucleophiles or dihydrogen. The surprising stability of positively charged carboranes in water enabled a study of their in vitro antiproliferative activity, which surpassed the effects of doxorubicin ...
Vlastimil Němec +10 more
wiley +2 more sources
Stereoselectivity of Macrocyclic Ring-Closing Olefin Metathesis [PDF]
Organic Letters, 2000 [reaction: see text] Macrocyclic ring-closing olefin metathesis using ruthenium catalyst 3 was performed to produce a 14-membered lactone. The E/Z ratio of lactone was high regardless of the R group (auxiliary) or the initial alkene stereochemistry.
Lee, Choon Woo, Grubbs, Robert H.
openaire +4 more sources