Results 61 to 70 of about 9,389 (255)
Solution Synthesis of Actinide Chalcogenide and Oxychalcogenide Nanoparticles
Angewandte Chemie, EarlyView.We report the synthesis of UOS, UOSe, and US2 nanoparticles under colloidal conditions. The magnetic properties were measured of all three materials and compared to prior studies of UO2 nanoparticles. Nanoparticle phases were determined using powder diffraction, and size by transmission electron microscopy.
Cheyenne Orozco +7 more
wiley +2 more sources
Synthesis of Bioactive Macrocycles Involving Ring-Closing Metathesis Strategy
SynOpen, 2023 This review reports the synthesis of various bioactive macrocycles, involving ring-closing metathesis as a key step, developed since ca. 2000. These macrocycles exhibited biological activities such as antiviral, antifungal, antibacterial, and anticancer ...
Nasrin Jahan, Inul Ansary
doaj +1 more source
Ring Closing Metathesis Reaction
, 1999 Various spiro cyclic systems are prepared from β-di-carbonyl compounds and active methylene substrates via palladium catalyzed allylation and ring-closing metathesis (RCM) reaction as key ...
Ashoke Deb +9 more
core +1 more source
Beyond catalyst deactivation: cross-metathesis involving olefins containing N-heteroaromatics
Beilstein Journal of Organic Chemistry, 2015 Alkenes containing N-heteroaromatics are known to be poor partners in cross-metathesis reactions, probably due to catalyst deactivation caused by the presence of a nitrogen atom.
Kevin Lafaye +4 more
doaj +1 more source
Molecules, 2002 The title compounds have been synthesized starting from l-menthone by application of a ring-closing metathesis reaction to confirm their reported absolute and relative stereochemistry.
Yoshinori Asakawa +5 more
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.
Lucarini, Fiorella +12 more
core +1 more source
1,7‐Digallatetracarborane: Between Nucleophilic closo‐Cluster and “Inverse Sandwich” Digallylene
Angewandte Chemie, EarlyView.A dianionic π‐ligand is used to make a Janus‐type twofold complex with low‐valent gallium Ga(+I). The resulting compound can be seen as and reveals the reactivity of both: a Wade‐type closo‐carborane cluster with nucleophilic Ga‐sites, as well as π‐ligand stabilized Ga(I) atoms in an inverse sandwich compound.
Julijan Sarcevic +4 more
wiley +2 more sources
A Synthetic Approach Toward a Brominated Oxocane Labdane Diterpenoid Isolated From
Natural Product Communications, 2020 The synthesis of a labdane oxocane epoxy-alcohol is described starting from the Wieland–Miescher ketone derivative via ring closing olefin metathesis of a diene derivative, targeting the total synthesis of a brominated oxocane labdane diterpenoid ...
Hisahiro Hagiwara +4 more
doaj +1 more source
Heavier Alkyne‐Ni0 Complexes, [R2E2·Ni] (E = Sn, Pb), Exhibiting σ‐Complex Character
Angewandte Chemie, EarlyView.Using a reductive group elimination strategy, heavier alkyne (LEEL; E = Sn, Pb) complexes of Ni0 are accessed. In contrast to classical alkyne coordination, these systems are best described as σ‐complexes, driven by ligand‐induced constraints and the established poor π‐bonding in heavier alkyne analogues.
Leopold Junge +3 more
wiley +2 more sources
Efficient catalytic alkyne metathesis with a fluoroalkoxy-supported ditungsten(III) complex
Beilstein Journal of Organic Chemistry, 2018 The molybdenum and tungsten complexes M2(OR)6 (Mo2F6, M = Mo, R = C(CF3)2Me; W2F3, M = W, R = OC(CF3)Me2) were synthesized as bimetallic congeners of the highly active alkyne metathesis catalysts [MesC≡M{OC(CF3)nMe3−n}] (MoF6, M = Mo, n = 2; WF3, M = W ...
Henrike Ehrhorn +3 more
doaj +1 more source