Results 41 to 50 of about 40,586 (282)

Phosphine-Catalyzed Annulations of Azomethine Imines: Allene-Dependent [3 + 2], [3 + 3], [4 + 3], and [3 + 2 + 3] Pathways [PDF]

, 2011
In this paper we describe the phosphine-catalyzed [3 + 2], [3 + 3], [4 + 3], and [3 + 2 + 3] annulations of azomethine imines and allenoates. These processes mark the first use of azomethine imines in nucleophilic phosphine catalysis, producing ...
Benitez, Diego, Goddard, William A., III, Guo, Hongchao, Jiang, Hui, Jing, Chengfeng, Kwon, Ohyun, Na, Risong, Shi, Jiayan, Tkatchouk, Ekaterina, Wang, Min, Wu, Xi, Xu, Qihai, Zhong, Jiangchun   +12 more
core   +2 more sources

Synthesis of aza-rocaglates via ESIPT-mediated (3+2) photocycloaddition [PDF]

, 2016
Synthesis of aza-rocaglates, nitrogen-containing analogues of the rocaglate natural products, is reported. The route features ESIPT-mediated (3+2) photocycloaddition of 1-alkyl-2-aryl-3-hydroxyquinolinones with the dipolarophile methyl cinnamate.
Cencic, Regina, Pelletier, Jerry, Porco, John A., Wang, Wenyu, Whitesell, Luke   +4 more
core   +1 more source

Transparent UV‐Curable Self‐Sanitizing Coatings Applicable to Diverse Surfaces and High‐Touch Screens to Mitigate Deadly Pathogen Transmission

Advanced Functional Materials, EarlyView.
Development of a transparent, self‐sanitizing antimicrobial coating technology applicable to a wide range of materials and surfaces‐including touchscreens, transparent substrates, and metal, plastic, and glass‐regardless of pathogen type. The spray‐coated, UV‐cross‐linked imidazole‐based quaternary ammonium chloride materials provide broad‐spectrum ...
Surjith Kumaran, Sumin Han, Euna Oh, Chunghee Jo, Hyerin Shin, Dae‐Hong Ko, Hyo‐Jick Choi   +6 more
wiley   +1 more source

A sustainable thermochemical conversion of animal biomass to N-heterocycles

Journal of Leather Science and Engineering, 2023
The production of high-valued organonitrogen chemicals, especially N-heterocycles, requires artificial N2 fixation accompanied by the consumption of fossil resources.
Yang Tang, Xiao Xiao, Chaojun Zhang, Xiaoling Wang, Junling Guo, Xuepin Liao   +5 more
doaj   +1 more source

Tandem Catalysis: Synthesis of Nitrogen-Containing Heterocycles [PDF]

Catalysts, 2020
In this Review, we consider all the publications since the beginning of the century that describe tandem reactions resulting in the formation of five-membered aromatic nitrogen heterocycles (thiazole, imidazole, indole, tetrazole, triazole, and isoxazole). The contents of this review are organized by taxonomy and type of tandem catalysis.
Joana F. Campos, Sabine Berteina-Raboin
openaire   +1 more source

Covalent Organic Frameworks for Photocatalytic CO2 Reduction: Metal Integration Principles, Strategies and Functions

Advanced Functional Materials, EarlyView.
Covalent organic frameworks (COFs) with metals have been recognized as versatile platforms for photocatalytic CO2 reduction (CO2PRR). Herein, an overview of metal integration strategies for COFs is systematically summarized. Regulatory mechanisms and structure–activity relationships between metal integration and COF‐based CO2PRR are emphasized.
Jie He, Minxian Zhang, Jinqiang Zhang, Hongqi Sun, Shaobin Wang, Xiaoguang Duan   +5 more
wiley   +1 more source

A Facile Synthesis of Bioactive Five- and Six-membered N-heterocyclic Aromatic Compounds Using AlCoFe2O4 as a Green Catalyst

Acta Chimica Slovenica, 2022
Nitrogen-containing heterocycles have been extensively studied due to their broad biological and pharmaceutical applications. In this study, we synthesized five- and six-membered nitrogen-containing rings through one-pot multicomponent reaction using an ...
Fatemeh Mostaghni, Homa Shafiekhani, Nosrat Madadi Mahani   +2 more
doaj   +1 more source

Bio‐Inspired Molecular Events in Poly(Ionic Liquids)

Advanced Functional Materials, EarlyView.
Originating from dipolar and polar inter‐ and intra‐chain interactions of the building blocks, the topologies and morphologies of poly(ionic liquids) (PIL) govern their nano‐ and micro‐processibility. Modulating the interactions of cation‐anion pairs with aliphatic dipolar components enables the tunability of properties, facilitated by “bottom‐up ...
Jiahui Liu, Marek W. Urban
wiley   +1 more source

Direct introduction of nitrogen and oxygen functionality with spatial control using copper catalysis. [PDF]

, 2018
Synthetic chemists have spent considerable effort optimizing the synthesis of nitrogen and oxygen containing compounds through a number of methods; however, direct introduction of N- and O-functionality remains challenging.
Fisher, David J, Limon, Luis, Read de Alaniz, Javier, Shaum, James B, Sroda, Miranda M   +4 more
core  

Triggering redox activity in a thiophene compound: radical stabilization and coordination chemistry [PDF]

, 2006
The synthesis, metalation, and redox properties of an acyclic bis(iminothienyl)methene L− are presented. This π-conjugated anion displays pronounced redox activity, undergoing facile one-electron oxidation to the acyclic, metal-free, neutral radical L ...
Davison, Gray, Gray, Schrauzer, Eisenberg, Sproules, Lyons, Kaim, Krężel, Jacquet, Huang, Broere, Greenhalgh, Luca, Munhá, Lyaskovskyy, Praneeth, Kaim, Chirik, Chirik, Annibale, Pankhurst, Pankhurst, Kochem, Reddy, Schweyen, Yoshida, Tanaka, Claessens, Hennessy, Loudet, Kaszyński, Chatterjee, Rasmussen, Gopalakrishna, Wakamiya, Tabakovic, d'Oro, Singh, Kawase, Davenport, Kia, Chen, Doshi, Latos-Grazynski, Lucas, Lane   +46 more
core   +2 more sources