Results 81 to 90 of about 121,575 (333)

Highly selective electrochemical hydrogenation of alkynes: Rapid construction of mechanochromic materials [PDF]

, 2019
Electrochemical hydrogenation has emerged as an environmentally benign and operationally simple alternative to traditional catalytic reduction of organic compounds.
Ge, Haibo, Li, Bijin
core   +1 more source

Ligand-Controlled Cobalt-Catalyzed Transfer Hydrogenation of Alkynes: Stereodivergent Synthesis of Z- and E-Alkenes.

Journal of the American Chemical Society, 2016
Herein, we report a novel cobalt-catalyzed stereodivergent transfer hydrogenation of alkynes to Z- and E-alkenes. Effective selectivity control is achieved based on a rational catalyst design.
Shaomin Fu, Nanqing Chen, Xufang Liu, Z. Shao, Shu‐Ping Luo, Qiang Liu   +5 more
semanticscholar   +1 more source

Impact of Surface Functionalization on NV Quantum Properties: Implications for Biosensing with Fluorescent Nanodiamonds

Advanced Functional Materials, EarlyView.
Fluorescent nanodiamonds (fNDs) have emerged as an invaluable quantum sensing platform for biological and biochemical systems. This paper investigates the influence of common surface functionalization strategies for bioconjugation on the quantum properties of nitrogen vacancy (NV) centers in nanodiamonds.
Anja Sadžak, Iván Pérez, Mateja Guimarães, Lukas Spantzel, Fedor Jelezko, Michael Börsch, Anke Krueger   +6 more
wiley   +1 more source

Radical‐Mediated Sulfonylarylation of Unactivated Alkynes via Intramolecular 1,4‐(hetero)aryl Migration

ChemistryEurope
Radical‐mediated difunctionalization of alkynes is an extensively explored strategy for diverse alkyne transformation and utilization. However, the direct difunctionalization of unactivated alkynes remains a significant challenge.
Xu Zhang, Fushan Chen, Chen Zhu
doaj   +1 more source

Glycerol as Precursor of Organoselanyl and Organotellanyl Alkynes

Molecules, 2017
Herein we describe the synthesis of organoselanyl and organotellanyl alkynes by the addition of lithium alkynylchalcogenolate (Se and Te) to tosyl solketal, easily obtained from glycerol.
Eder J. Lenardão, Elton L. Borges, Guilherme Stach, Liane K. Soares, Diego Alves, Ricardo F. Schumacher, Luana Bagnoli, Francesca Marini, Gelson Perin   +8 more
doaj   +1 more source

Copper(I)-Phosphinite Complexes in Click Cycloadditions: Three-Component Reactions and Preparation of 5-Iodotriazoles [PDF]

, 2016
© 2016 The Authors. Published by Wiley-VCH Verlag GmbH & Co. KGaA.The remarkable activity displayed by copper(I)–phosphinite complexes of general formula [CuBr(L)] in two challenging cycloadditions is reported: a) the one-pot azidonation/cycloaddition of
Crosbie, P, Diez-Gonzalez, S, Lal, S, Perez, J   +3 more
core   +2 more sources

Bio‐Orthogonally Crosslinked Supramolecular Polymer Bottlebrush Hydrogels for Long‐Term 3D Cell Culture

Advanced Functional Materials, EarlyView.
Fibrous benzenetrispeptide (BTP) hydrogels, fabricated via strain‐promoted azide‐alkyne cycloaddition (SPAAC) crosslinking, form robust, bioinert networks. These hydrogels can support 3D cell culture, where cell viability and colony growth depend on the fiber content.
Ceren C. Pihlamagi, David Pretzel, Peer Nölte, Kourosh Rezaei, Ulrich S. Schubert, Johannes C. Brendel   +5 more
wiley   +1 more source

Hydrotelluration of alkynes: a unique route to Z-vinyl organometallics

Journal of the Brazilian Chemical Society, 2001
The hydrotelluration reaction of alkynes is reviewed. The transformation of vinylic tellurides into reactive vinyl organometallics and the coupling reactions of vinylic tellurides with alkynes and organometallics are presented.
Vieira Maurício L., Zinn Fabiano K., Comasseto João V.   +2 more
doaj  

Expanding the Frontier of Linear Drug Design: Cu‐Catalyzed Csp–Csp3‐Coupling of Electron‐Deficient SF4‐Alkynes with Alkyl Iodides

Advanced Science
Despite the attractive properties of tetrafluorosulfanyl (SF4) compounds in drug discovery, medicinal research on SF4 molecules is hindered by the scarcity of suitable synthetic methodologies.
Srikanth Reddy Narra, Muhamad Zulfaqar Bacho, Masashi Hattori, Norio Shibata   +3 more
doaj   +1 more source

Recent advances in carbocupration of α-heterosubstituted alkynes

Beilstein Journal of Organic Chemistry, 2010
Carbocupration of α-heterosubstituted alkynes leads to the formation of stereodefined functionalized vinyl copper species as single isomer. Recent advances in the field show that a simple pre-association of the organometallic derivative with an ...
Ahmad Basheer, Ilan Marek
doaj   +1 more source