Results 91 to 100 of about 17,991 (268)

Asymmetric synthesis of tetrazole and dihydroisoquinoline derivatives by isocyanide-based multicomponent reactions

Nature Communications, 2019
Asymmetric isocyanide-based multicomponent reactions are elegant, yet challenging, strategies to access valuable N-heterocycles. Here, the authors employ a chiral Mg(II) -N,N′-dioxide catalyst in three- or four-component reactions to obtain chiral ...
Qian Xiong, Shunxi Dong, Yushuang Chen, Xiaohua Liu, Xiaoming Feng   +4 more
doaj   +1 more source

Waste to Wealth: Electrochemical Innovations in Hydrogen Production From Industrial Wastewater

Global Challenges, EarlyView.
There is increasing worry regarding the environmental impact of waste from hospital sewage, agricultural runoff, and industrial wastewater. Those wastes can contaminate water ecosystems, harming both human health and aquatic life. By employing an electrochemical method, we can treat these toxic substances in wastewater while simultaneously producing ...
Tesfaye Alamirew Dessie, Lemlem Seyoum Seifu, Woldesenbet Bafe Dilebo   +2 more
wiley   +1 more source

Tetrazolium Compounds: Synthesis and Applications in Medicine

Molecules, 2015
Tetrazoles represent a class of five-membered heterocyclic compounds with polynitrogen electron-rich planar structural features. This special structure makes tetrazole derivatives useful drugs, explosives, and other functional materials with a wide range
Cheng-Xi Wei, Ming Bian, Guo-Hua Gong
doaj   +1 more source

Diverse reactivity of maleimides in polymer science and beyond

Polymer International, Volume 74, Issue 4, Page 296-306, April 2025.
This mini‐review provides a thorough overview of maleimide chemistry, highlighting its diverse reactivity in polymer and materials science applications. Abstract Maleimides are remarkably versatile functional groups, capable of participating in homo‐ and copolymerizations, Diels–Alder and (photo)cycloadditions, Michael additions, and other reactions ...
Bruce E Kirkpatrick, Kristi S Anseth, Tayler S Hebner   +2 more
wiley   +1 more source

Synthesis of Novel bis-1,5-Disubstituted-1H-Tetrazoles by an Efficient Catalyst-Free Ugi-Azide Repetitive Process

Molecules, 2015
A series of five novel bis-1,5-disubstituted-1H-tetrazoles (bis-1,5-DS-1H-T) were quickly prepared by a catalyst-free Ugi-azide repetitive process from easily accessible starting materials in excellent yields, either at room temperature (88%–95%) or ...
Luís E. Cárdenas-Galindo, Alejandro Islas-Jácome, Karla M. Colmenero-Martínez, Antonio Martínez-Richa, Rocío Gámez-Montaño   +4 more
doaj   +1 more source

Tin-Catalyzed Synthesis of 5-Substituted 1H -Tetrazoles from Nitriles: Homogeneous and Heterogeneous Procedures

Advanced Synthesis and Catalysis, 2018
. The preparation of 5-substituted 1H-tetrazoles was efficiently achieved by reaction of trimethylsilylazide with nitriles using a triorganotin alkoxide precatalyst. The reaction mechanism was first investigated using a homogeneous tributyltin derivative
Jean-Mathieu Chrétien, Gaelle Kerric, F. Zammattio, N. Galland, M. Paris, J. Quintard, E. L. Grognec   +6 more
semanticscholar   +1 more source

Metal Oxides and Dichromate Salts Application as Burning Catalysts for the Modern Aluminized Ammonium Nitrate–Based Solid Propellants

Propellants, Explosives, Pyrotechnics, EarlyView.
ABSTRACT This study is devoted to the investigation of combustion characteristics of aluminized solid propellants (SPs) with ammonium nitrate (SP4, 44 wt.% and SP5, 66 wt.%), ammonium perchlorate (5 wt.%), and inert (butyl rubber) and active (polyvinyl tetrazole) binders.
Alexander Gromov, Konstantin Matrosov, Rezo Aliyev, Neel Kamal Gupta   +3 more
wiley   +1 more source

Peptide–Oligonucleotide Conjugates: Catalytic Preparation in Aqueous Solution or On‐Column

Current Protocols, Volume 5, Issue 6, June 2025.
Abstract Peptide–oligonucleotide conjugates (POCs) are synthesized through a novel catalytic and sustainable approach. The amide coupling between peptide and oligonucleotide is facilitated by 1,4‐diazabicyclo[2.2.2]octane (DABCO) as catalyst and 2‐chloro‐4,6‐dimethoxy‐1,3,5‐triazine (CDMT) as a stoichiometric activating agent.
Marion Gras, Michael Smietana, Pauline Adler   +2 more
wiley   +1 more source

An Efficient One-Pot Three-Component Synthesis of Novel Sulfanyl Tetrazoles Using Ionic Liquids

Journal of Chemistry, 2013
An efficient, simple, and environmentally benign method for the synthesis of novel sulfanyl tetrazoles has been achieved by one-pot three-component reaction of phenacyl bromides/3-(2-bromoacetyl)coumarins with KSCN and NaN3 using [Bmim]BF4 ionic liquid ...
Sankari Kanakaraju, Bethanamudi Prasanna, G. V. P. Chandramouli   +2 more
doaj   +1 more source

5-Pentyl-1H-tetrazole

Acta Crystallographica Section E, 2011
The title compound C6H12N4, is one of a few known tetrazoles with an alkyl chain in the 5-position. The asymmetric unit contains two independent molecules. The molecules are linked by N—H...N interactions into chains with graph-set notation D(2)
Heiner Detert, Dieter Schollmeyer, Thorsten Rieth   +2 more
doaj   +1 more source