Results 91 to 100 of about 11,801 (209)

An Achiral Tetradentate Cis‐α‐Coordinating NCCN Ligand Gives Rise to a Configurationally Stable Chiral‐at‐Iron Complex for Enantioselective Catalysis

Chemistry – A European Journal, Volume 32, Issue 3, 16 January 2026.
The design and synthesis of a linear tetradentate NCCN ligand incorporating two 1,2,3‐triazolin‐5‐ylidene mesoionic carbene donors, and its application to asymmetric iron catalysis is reported. This work represents the first example of an iron complex derived from a cis‐α‐coordinating tetradentate NCCN ligand, and notably, the first chiral iron ...
Lukas Hinterlang, Nemrud Demirel, Sergei I. Ivlev, Eric Meggers   +3 more
wiley   +1 more source

Synthesis of bi- and bis-1,2,3-triazoles by copper-catalyzed Huisgen cycloaddition: A family of valuable products by click chemistry

Beilstein Journal of Organic Chemistry, 2015
The Cu(I)-catalyzed azide-alkyne cycloaddition reaction, also known as click chemistry, has become a useful tool for the facile formation of 1,2,3-triazoles.
Zhan-Jiang Zheng, Ding Wang, Zheng Xu, Li-Wen Xu   +3 more
doaj   +1 more source

Heterociclos 1,2,3-triazólicos: histórico, métodos de preparação, aplicações e atividades farmacológicas 1,2,3-triazolic heterocycles: history, preparations, applications and pharmacological activities

Química Nova, 2006
The 1,2,3-triazole, known since the end of 19th century, is a very widely used heterocyclic system present in many synthetic substances and commercial pharmaceutical compounds.
Júlio O. F. Melo, Claudio Luis Donnici, Rodinei Augusti, Vitor F. Ferreira, Maria Cecília B. V. de Souza, Maria Lourdes G. Ferreira, Anna C. Cunha   +6 more
doaj   +1 more source

MOF-Derived Cu@Cu2O Nanocatalyst for Oxygen Reduction Reaction and Cycloaddition Reaction [PDF]

, 2018
Research on the synthesis of nanomaterials using metal-organic frameworks (MOFs), which are characterized by multi-functionality and porosity, as precursors have been accomplished through various synthetic approaches.
Joo, Sang Hoon, Kim, Aram, Muthuchamy, Nallal, Park, Kang Hyun, Yoon, Chohye   +4 more
core   +2 more sources

Triplett‐Metallovinylidene von Palladium und Platin auf Basis eines chelatisierenden P/Diazoalkens

Angewandte Chemie, Volume 138, Issue 1, 2 January 2026.
Es wird eine neue Klasse an chelatisierenden Diazoalkenen vorgestellt und ihre Koordinationskomplexe mit Pd und Pt charakterisiert. Durch Bestrahlung wird ein N2‐Verlust erzeugt, wodurch erstmals spektroskopisch charakterisierte Triplet‐Metallovinylidene unter Verwendung von FD‐FT‐THz‐EPR‐Spektroskopie und SQUID‐Messungen nachgewiesen werden.
Max Amann, Maria Drosou, Tarek Al Said, Alexander Allgaier, Yury Kutin, Patrick W. Antoni, Julian J. Holstein, Müge Kasanmascheff, Joris van Slageren, Alexander Schnegg, Dimitrios A. Pantazis, Max M. Hansmann   +11 more
wiley   +1 more source

Copper(I)-catalyzed tandem reaction: synthesis of 1,4-disubstituted 1,2,3-triazoles from alkyl diacyl peroxides, azidotrimethylsilane, and alkynes

Beilstein Journal of Organic Chemistry, 2018
A copper-catalyzed azide–alkyne cycloaddition (CuAAC) reaction for the synthesis of 1,4-disubstituted 1,2,3-triazoles from alkyl diacyl peroxides, azidotrimethylsilane, and terminal alkynes is reported.
Muhammad Israr, Changqing Ye, Munira Taj Muhammad, Yajun Li, Hongli Bao   +4 more
doaj   +1 more source

A reação "click" na síntese de 1,2,3-triazóis: aspectos químicos e aplicações

Química Nova, 2011
The Copper-catalyzed azide-alkyne cycloaddition (CuAAC), often referred to as "click" reaction, has become a very popular reaction in the last years. It affords exclusively 1,4-disubstituted 1,2,3-triazoles and has been widely used to connect readily ...
Luiza Baptista de Oliveira Freitas, Fernando Armini Ruela, Guilherme Rocha Pereira, Rosemeire Brondi Alves, Rossimiriam Pereira de Freitas, Leandro José dos Santos   +5 more
doaj   +1 more source

Triplet Metallovinylidenes of Palladium and Platinum Based on a Chelating P/Diazoalkene Ligand

Angewandte Chemie International Edition, Volume 65, Issue 1, 2 January 2026.
A new class of chelating diazoalkenes is presented and their coordination complexes with Pd and Pt are characterized. Irradiation triggers N2 loss and gives access to the first triplet metallovinylidenes spectroscopically characterized utilizing FD‐FT THz‐EPR spectroscopy and SQUID measurements.
Max Amann, Maria Drosou, Tarek Al Said, Alexander Allgaier, Yury Kutin, Patrick W. Antoni, Julian J. Holstein, Müge Kasanmascheff, Joris van Slageren, Alexander Schnegg, Dimitrios A. Pantazis, Max M. Hansmann   +11 more
wiley   +1 more source

Synthesis and Spectral Study of a New Family of 2,5-Diaryltriazoles Having Restricted Rotation of the 5-Aryl Substituent

Molecules, 2020
Efficient synthesis of 2,5-diaryl substituted 4-azido-1,2,3-triazoles by the reaction of sodium azide with dichlorosubstituted diazadienes was demonstrated.
Biligma Tsyrenova, Valentine Nenajdenko
doaj   +1 more source

4-Benzyl-1-(4-nitrophenyl)-1H-1,2,3-triazole: crystal structure and Hirshfeld analysis [PDF]

, 2017
The mol­ecule in the title compound, C15H12N4O2, has a twisted L-shape with the dihedral angle between the aromatic rings of the N-bound benzene and C-bound benzyl groups being 70.60 (9)°. The nitro group is co-planar with the benzene ring to which it is
Ali, Akbar, Dallasta Pedroso, Sofia, Sousa Madureira, Lucas, Tiekink, Edward R. T. *, Weber Paixão, Márcio, Zukerman-Schpector, Julio   +5 more
core   +2 more sources