Results 31 to 40 of about 4,566,251 (289)
The allylic chalcogen effect in olefin metathesis
Beilstein Journal of Organic Chemistry, 2010 Olefin metathesis has emerged as a powerful tool in organic synthesis. The activating effect of an allylic hydroxy group in metathesis has been known for more than 10 years, and many organic chemists have taken advantage of this positive influence for ...
Yuya A. Lin, Benjamin G. Davis
doaj +1 more source
Imparting functional variety to cellulose ethers via olefin cross-metathesis
, 2015 Olefin cross-metathesis is a valuable new approach for imparting functional variety to cellulose ethers. Starting from commercially available ethyl cellulose, terminally unsaturated alkyl groups were appended as metathesis handles by reaction with allyl ...
Yifan Dong, Kevin J. Edgar
openalex +3 more sources
Chemistry, 2018 The benzylidyne complex [PhC≡W{OSi(OtBu)3 }3 ] (1) catalyzed the cross-metathesis between 1,4-bis(trimethylsilyl)-1,3-butadiyne (2) and symmetrical 1,3-diynes (3) efficiently, which gave access to TMS-capped 1,3-diynes RC≡C-C≡CSiMe3 (4).
Tobias M. Schnabel +4 more
semanticscholar +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
Direct synthesis of Z-alkenyl halides through catalytic cross-metathesis. [PDF]
Nature, 2016 Olefin metathesis has had a large impact on modern organic chemistry, but important shortcomings remain: for example, the lack of efficient processes that can be used to generate acyclic alkenyl halides.
Koh MJ +4 more
europepmc +2 more sources
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
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
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
Beilstein Journal of Organic Chemistry, 2019 This mini-review summarizes the applications of olefin metathesis in synthesis and functionalization of polyhedral oligomeric silsesquioxanes (POSS) and POSS-containing polymeric materials.
Patrycja Żak, Cezary Pietraszuk
doaj +1 more source
SI‐bioATRP in Mesoporous Silica for Size‐Exclusion Driven Local Polymer Placement
Advanced Functional Materials, EarlyView.An enzyme‐catalyzed surface‐initiated atom transfer radical polymerization (SI‐bioATRP) of an anionic monomer within mesoporous silica particles, using hemoglobin as a catalyst, allows for controlling the location of the formed polymer via size‐exclusion effects between the nanopores and the biomacromolecules, thereby opening routes to functional ...
Oleksandr Wondra +8 more
wiley +1 more source