Results 21 to 30 of about 35,734 (288)
Where r you going? A typology of long-distance metathesis of liquids
Isogloss, 2022 This paper offers a typological analysis of the diachronic phenomena of long-distance metathesis of liquids that thrive in the history of several Romance languages.
Eirini Apostolopoulou
doaj +1 more source
Olefin metathesis in air [PDF]
Beilstein Journal of Organic Chemistry, 2015 Since the discovery and now widespread use of olefin metathesis, the evolution of metathesis catalysts towards air stability has become an area of significant interest. In this fascinating area of study, beginning with early systems making use of high oxidation state early transition metal centers that required strict exclusion of water and air ...
Lorenzo Piola +2 more
openaire +3 more sources
Recent applications of ring-rearrangement metathesis in organic synthesis
Beilstein Journal of Organic Chemistry, 2015 Ring-rearrangement metathesis (RRM) involves multiple metathesis processes such as ring-opening metathesis (ROM)/ring-closing metathesis (RCM) in a one-pot operation to generate complex targets.
Sambasivarao Kotha +4 more
doaj +1 more source
Beilstein Journal of Organic Chemistry, 2020 The prochiral 4-(allyloxy)hepta-1,6-diynes, optionally modified in the positions 1 and 7 with an alkyl or ester group, undergo a chemoselective ring-closing enyne metathesis yielding racemic 4-alkenyl-2-alkynyl-3,6-dihydro-2H-pyrans.
Viola Kolaříková +3 more
doaj +1 more source
A Review on Olefin Metathesis Reactions as a Green Method for the Synthesis of Organic Compounds
Journal of Chemistry, 2021 Olefin metathesis is a metal-mediated C-C bond exchange by which the two fragments within the olefin precursor are redistributed as a result of breaking the double bond to obtain a new product. Currently, most of the synthetic organic compounds, polymers,
Atitegeb Abera Tsedalu
doaj +1 more source
پژوهشنامه ادبیات کردی, 2023 This research report presents a quantitative investigation into the impact of social variables including age, education and gender on a specific phonological variation (Metathesis in word [tʃoklæ]) in the Hawrami language, specifically the Paveh dialect.
Nadia Safiee +2 more
doaj +1 more source
Formation of Gallium Monofluoride in the Coordination Sphere of Nickel
Angewandte Chemie, EarlyView.The elusive gas‐phase species gallium monofluoride forms selectively in the coordination sphere of a nickel(II) centre as a product of C(sp3)–F bond activation, with a weakly coordinating anion as the fluorine source. The herein reported gallium monofluoride ligand acts as a very strong σ‐donor ligand at nickel and serves as a fluorine donor towards ...
Johannes Stephan +6 more
wiley +2 more sources
New Approaches to Olefin Cross-Metathesis
, 2016 New methodology for the selective cross-metathesis (CM) of terminal olefins employing ruthenium benzylidene 1 is described. CM with symmetric internal olefins was found to provide a useful means for homologating terminal olefins to protected allylic ...
Helen E. Blackwell (1247094) +5 more
core +2 more sources
Relay cross metathesis reactions of vinylphosphonates
Beilstein Journal of Organic Chemistry, 2014 Dimethyl (β-substituted) vinylphosphonates do not readily undergo cross metathesis reactions with Grubbs catalyst and terminal alkenes. However, the corresponding mono- or diallyl vinylphosphonate esters undergo facile cross metathesis reactions.
Raj K. Malla +2 more
doaj +1 more source
Dimethyl 4,5-dichlorophthalate
IUCrData, 2021 While endeavoring to synthesize new chlorinated ligands for ruthenium-based metathesis catalysts, the title compound dimethyl 4,5-dichlorophthalate, C10H8Cl2O4, was prepared from commercially available 4,5-dichlorophthalic acid in ∼77% yield.
Daniel D. Hickstein +3 more
doaj +1 more source