Results 51 to 60 of about 42,464 (282)
Synthesis of Substituted P-Stereogenic Vinylphosphine Oxides by Olefin Cross-Metathesis
, 2016 Substituted vinylphosphine oxides have been prepared in good yield and exclusive (E)-olefin selectivity via olefin cross-metathesis using Grubbs and Hoveyda-type ruthenium catalysts.
K. Michał Pietrusiewicz (1676410) +3 more
core +1 more source
Advanced Science, EarlyView.A new data‐efficient framework combining DFT calculations, a neural network model, and automated graph analysis of catalytic reaction networks is proposed and applied to CO2 hydrogenation on transition metal nanoparticles. The analysis shows how efficient C2 oxygenate production requires a balance between CHx formation, C–C coupling, protonation, and ...
Mikhail V. Polynski, Sergey M. Kozlov
wiley +1 more source
Back ProjectionMetathesis surge de una inquietud personal sobre la vida y la concepción de la muerte como una interrupción abrupta de mi rutina. Al escuchar que en lugares donde estuve presente en algún momentode mi historia, han ocurrido hechos trágicos que cortaron la vida de ...
+4 more sources
Double Reduction of Ph3B to a Dianionic Borane With a Powerful SrI Intermediate
Angewandte Chemie, EarlyView.Although dianionic boranes follow the octet rule and are isoelectronic to carbanions or amines, the high electron density combined with the electropositive nature of the B center make them highly unstable species. In this study, we present synthesis and full characterization of a complex in which Ph3B2− is sandwiched between two Sr2+ ions and describe ...
Michael Morasch +4 more
wiley +2 more sources
Fattori posizionali nella metatesi del sardo sud-occidentale
Annali Online dell'Università di Ferrara. Sezione Lettere, 2013 This paper aims to provide a descriptive and theoretical account of a Southern Sardinian metathesis in terms of lateral relations. Assuming the tenets of the CVCV model (Lowenstamm 1996; Scheer 2004), also known as Strict CV, it has been argued that the ...
Rosangela Lai
doaj +1 more source
Synergistic approach to polycycles through Suzuki–Miyaura cross coupling and metathesis as key steps
Beilstein Journal of Organic Chemistry, 2018 This account provides an overview of recent work, including our own contribution dealing with Suzuki–Miyaura cross coupling in combination with metathesis (or vice-versa). Several cyclophanes, polycycles, macrocycles, spirocycles, stilbenes, biaryls, and
Sambasivarao Kotha +2 more
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
Design of Giant Negative Thermal Expansion Based on a Fluorite Structure
Angewandte Chemie, EarlyView.Ba[B(CN)4]2 with a fluorite structure possessing a large average atomic volume was successfully synthesized for the first time. In situ powder X‐ray diffraction measurements revealed that Ba[B(CN)4]2 exhibits giant negative thermal expansion (NTE) behavior through non‐rigid unit modes with strongly negative Grüneisen parameters.
Ayano Umakoshi +5 more
wiley +2 more sources
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
Probing Electrocatalyst Design for Product Selectivity in CO2 Reduction
Advanced Science, EarlyView.Selective CO2 electroreduction is controlled by catalyst structure, dynamic surface reconstruction, adsorbate interactions, and reaction microenvironment. This review summarizes Cu‐ and non‐Cu‐based catalysts, single‐atom and molecular systems, degradation pathways, and operando/computational strategies for steering CO2RR toward hydrocarbons ...
Suvodeep Sen +5 more
wiley +1 more source