Results 31 to 40 of about 41,386 (303)
Reactions of Tetracyclone Molybdenum Complexes with Electrophilic Alkynes: Cyclopentadienone–Alkyne Coupling and Alkyne Coordination [PDF]
Organometallics, 2017 The reactions of the complexes [Mo(CO)2(η4-C4Ph4CO)2] and [Mo(CO)3(NCMe)(η4-C4Ph4CO)] with the alkynes dimethyl acetylenedicarboxylate (DMAD; RC≡CR where R = CO2Me) and methyl propiolate (RC≡CH) have been studied. In the case of DMAD, the initial product is the green carbonyl complex [Mo(CO)(RC≡CR)(η5,σ-C4Ph4COCR═CR)] (3), in which two alkyne molecules
Adams, H. +4 more
openaire +2 more sources
From Amines to Alkynes – Lighting the Way
, 2018 We present a metal-free photoredox strategy for the formation of Csp3-Csp bonds from redox-activated primary amine derivatives. The developed reaction of 2,4,6-triphenylpyridiniu salts with alkynyl tosylates, leading to functionalized alkynes , is easily
Michał, Ociepa +2 more
core +1 more source
Nature CommunicationsCopper-based catalysts exhibit excellent performance of electrocatalytic alkynes hydrogenation, especially for the selective alkynes hydrogenation toward alkenes.
Mengyu Li +11 more
doaj +1 more source
QUANTITATIVE CORRELATION «STRUCTURE OF ALKYNES C2H2-C9H16 – THE HEAT OF VAPORIZATION » [PDF]
Физико-химические аспекты изучения кластеров, наноструктур и наноматериалов, 2013 For series alkynes CnH2n-2 based on group additive method (which based on the first environment of atoms), one obtained 8-constant additive scheme of calculation of their physical and chemical properties.
V.V. Grebeshkov, V.M. Smolyakov
doaj
Síntese de 1,3-diinos via acoplamento de acetilenos terminais catalisada por CuI sob irradiação de micro-ondas [PDF]
, 2015 Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências Físicas e Matemáticas, Programa de Pós-Graduação em Química, Florianópolis, 2015.No presente trabalho, desenvolveu-se uma nova metodologia sintética eficiente, simples e ...
Bettanin, Luana
core
, 2019 An efficient sequential intramolecular hydroamination/asymmetric hydrogenation reaction under catalysis of a single chiral ruthenium complex or a binary system consisting of achiral gold complex and chiral ruthenium complex has been reported.
Faju Li (6651143) +5 more
core +1 more source
Advanced Engineering Materials, EarlyView.Scandium (Sc)‐doped AlCoCrFeMo HEA coatings are fabricated via flame spraying with 0.1, 0.3, and 0.5 wt% Sc additions. Among these, the HEA‐Sc0.3 coating exhibits the highest corrosion resistance, indicated by a more positive corrosion potential and lower current density.
Pankaj Kumar +7 more
wiley +1 more source
Electrochemical cyclization of alkynes to construct five-membered nitrogen-heterocyclic rings
Beilstein Journal of Organic ChemistryOrganic five-membered rings have shown significant applications in the fields of organic synthesis, natural products, organic materials and pharmaceuticals for their unique characteristics. Electrochemical construction of five-membered rings from alkynes
Lifen Peng +10 more
doaj +1 more source
A Zinc-Mediated Deprotective Annulation Approach to New Polycyclic Heterocycles
Molecules, 2021 A straightforward approach to new polycyclic heterocycles, 1H-benzo[4,5]imidazo[1,2-c][1,3]oxazin-1-ones, is presented. It is based on the ZnCl2-promoted deprotective 6-endo-dig heterocyclization of N-Boc-2-alkynylbenzimidazoles under mild conditions ...
Lucia Veltri +6 more
doaj +1 more source
Selective C-H Halogenation of Alkenes and Alkynes Using Flavin-Dependent Halogenases
, 2023 Single component flavin-dependent halogenases (FDHs) possesses both flavin reductase and FDH activity in a single enzyme. We recently reported that the single component FDH AetF catalyzes site-selective bromination and iodination of a variety of aromatic
Cahmlo, Olive +3 more
core +1 more source