Results 51 to 60 of about 4,073,254 (239)
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
Cross-metathesis of unsaturated alpha-amino acid derivatives
, 1998 Cross-metathesis of homoallylglycine derivatives with aryl- and alkyl-substituted alkenes using the ruthenium catalyst (Cy3P)(2)Cl2Ru=CHPh 1 has been achieved in 43-55 and 55-66% yield respectively.
Keen, Stephen P. +5 more
core +1 more source
Design and synthesis of ruthenium indenylidene-based catalysts for olefin metathesis [PDF]
, 2013 As part of a European wide effort to develop metathesis catalysts for use in fine chemical and pharmaceutical compound synthesis, this study focuses on the design and synthesis of ruthenium based catalysts for olefin metathesis.
Urbina-Blanco, César A.
core +2 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
Geminal Alkene–Alkyne Cross Metathesis Using a Relay Strategy
, 2016 A relay strategy was employed to achieve an intermolecular ene–yne metathesis between 1,1-disubstituted alkenes and alkynes. The relay serves to activate an unreactive alkene which will not participate in ene-yne metathesis.
Steven T. Diver (1667287) +3 more
core +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
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Catalytic Nitrile-Alkyne Cross-Metathesis
, 2016 The first catalytic cross-metathesis reaction of an alkyne with a nitrile is described. The nitride complex N⋮W(OC(CF3)2CH3)3(DME) undergoes reversible triple-bond metathesis reactions with alkynes (RC⋮CR; R = Et, 4-C6H4OMe), forming the alkylidyne ...
Eric S. Wiedner (1364715) +3 more
core +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
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