Results 31 to 40 of about 121,575 (333)

Synthetic chemistry and biological activity of pentafluorosulphanyl (SF5) organic molecules [PDF]

open access: yes, 2012
Acknowledgements We thank the European Commission for financial support (Industry Academia Partnerships and Pathways project “PET BRAIN”, Contract No 251482). S.A.
Altomonte, Stefano, Zanda, Matteo
core   +1 more source

Recent Advances in the Addition of Amide/Sulfonamide Bonds to Alkynes

open access: yesMolecules, 2019
The addition of amide/sulfonamide bonds to alkynes is not only one of the most important strategies for the direct functionalization of carbon–carbon triple bonds, but also a powerful tool for the downstream transformations of amides/sulfonamides ...
Fei Zhao   +5 more
doaj   +1 more source

Synthesis of N-perfluoroalkyl-3,4-disubstituted pyrroles by rhodium-catalyzed transannulation of N-fluoroalkyl-1,2,3-triazoles with terminal alkynes

open access: yesBeilstein Journal of Organic Chemistry, 2021
The rhodium-catalyzed transannulation of N-perfluoroalkyl-1,2,3-triazoles with aromatic and aliphatic terminal alkynes under microwave heating conditions afforded N-perfluoroalkyl-3,4-disubstituted pyrroles (major products) and N-fluoroalkyl-2,4 ...
Olga Bakhanovich   +3 more
doaj   +1 more source

Discovery of new mutually orthogonal bioorthogonal cycloaddition pairs through computational screening. [PDF]

open access: yes, 2015
Density functional theory (DFT) calculations and experiments in tandem led to discoveries of new reactivities and selectivities involving bioorthogonal sydnone cycloadditions.
Houk, KN   +3 more
core   +1 more source

Regioselective Formation of α-Vinylpyrroles from the Ruthenium-Catalyzed Coupling Reaction of Pyrroles and Terminal Alkynes Involving C–H Bond Activation [PDF]

open access: yes, 2010
The cationic ruthenium catalyst Ru3(CO)12/NH4PF6 was found to be highly effective for the intermolecular coupling reaction of pyrroles and terminal alkynes to give gem-selective α-vinylpyrroles.
Gao, Ruili, Yi, Chae S.
core   +2 more sources

Functionalization of remote C(sp3)-H bonds enabled by copper-catalyzed coupling of O-acyloximes with terminal alkynes

open access: yesNature Communications, 2020
Sonogashira cross-coupling is a powerful strategy to prepare functionalized internal alkynes. Here, the authors report a domino sequence for the generation of γ-/δ-alkynyl nitriles and γ-alkynyl ketones from the coupling of terminal alkynes with O ...
Zhaodong Li   +3 more
doaj   +1 more source

Cycloaddition Chemistry of a Silylene‐Nickel Complex toward Organic π‐Systems: From Reversibility to C−H Activation [PDF]

open access: yes, 2020
The versatile cycloaddition chemistry of the Si−Ni multiple bond in the acyclic (amido)(chloro)silylene→Ni0 complex 1, [(TMSL)ClSi→Ni(NHC)2] (TMSL=N(SiMe3)Dipp; Dipp=2,6‐iPr2C6H4; NHC=C[(iPr)NC(Me)]2), toward unsaturated organic substrates is reported ...
Drieß, Matthias   +2 more
core   +1 more source

Cascade CuH-Catalysed Conversion of Alkynes to Enantioenriched 1,1-Disubstituted Products

open access: yesNature Catalysis, 2019
Enantioenriched α-aminoboronic acids play a unique role in medicinal chemistry and have emerged as privileged pharmacophores in proteasome inhibitors. Additionally, they represent synthetically useful chiral building blocks in organic synthesis. Recently,
D. Gao   +8 more
semanticscholar   +1 more source

An element through the looking glass: Exploring the Au-C, Au-H and Au-O energy landscape [PDF]

open access: yes, 2015
Gold, the archetypal “noble metal”, used to be considered of little interest in catalysis. It is now clear that this was a misconception, and a multitude of gold-catalysed transformations has been reported.
Bochmann, Manfred   +2 more
core   +1 more source

QUANTITATIVE CORRELATION «STRUCTURE OF ALKYNES C2H2-C9H16 – THE HEAT OF VAPORIZATION » [PDF]

open access: yesФизико-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  

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