Results 51 to 60 of about 37,751 (208)

Synthesis of Novel Fused Heterocycles Based on Pyrano[2,3-c]pyrazole

Molecules, 1998
3-Substituted 1,2,4-triazole derivatives (5, 9, 13, 16b, 19), pyrimidinium salts (21), triazines (24), and aryl methylene hydrazono pyrazolopyrano-pyrimidine (27a,b) which are rearranged in basic medium to 30a,b, were afforded via the reaction of 6-amino
M. E. A. Zaki
doaj   +1 more source

Volatile Additives Engineering: A Trustworthy Morphology Control Strategy in Non‐Fullerene Organic Solar Cells

Advanced Science, Volume 13, Issue 58, 19 October 2026.
In this review, the classification and development history of the volatile solid and solvent additives are comprehensively summarized, the underlying mechanisms of morphology optimization are discussed, and a summary of volatile additive‐induced improvements in interfacial layer performance is provided.
Jianqiang Qin, Zhiqin Lai, Jiang‐Ling Shi, Zheng Xiao, Yuwei Duan, Zhiping Hu, Juan Du, Qiang Peng   +7 more
wiley   +1 more source

Unexpected O–H Insertion of Rhodium-Azavinylcarbenes with N‑Acylhydrazones: Divergent Synthesis of 3,6-Disubstituted- and 3,5,6-Trisubstituted-1,2,4-Triazines

, 2017
A practical and efficient method for divergent synthesis of 3,6-disubstituted- and 3,5,6-trisubstituted-1,2,4-triazines via unexpected rhodium-catalyzed O–H insertion/rearrangement/conditions-controlled intramolecular cyclization and oxidation reaction ...
Shiwei Zhang (2394778), Peiwen Pan (366415), Jiang Meng (1754266), Min Wen (3549752), Xingxin Yu (1392106), Wei-Ping Deng (1392103)   +5 more
core   +1 more source

Azine Derivatives as a New Generation of Insect Growth Regulators

CHIMIA, 2003
A new generation of insect-growth-regulator insecticides, the azines, are presented. They inhibit the chitin biosynthesis process and are active against lepidopteran pests. Their synthesis and a structure–activity relationship will be discussed.
Martin Eberle, Saleem Farooq, André Jeanguenat, Deborah Mousset, Arthur Steiger, Stephan Trah, Werner Zambach, Alfred Rindlisbacher   +7 more
doaj   +1 more source

Corrosion‐Protection of T122 Steel Using g‐C3N5‐Embedded Epoxy Coatings

Materials and Corrosion, Volume 77, Issue 10, Page 1734-1746, October 2026.
Study evaluates g‐C3N5 (CN) reinforced epoxy coatings on T122 steel in NaCl and H2SO4. Electrochemical tests revealed that 2% loading maximizes corrosion resistance by blocking pores and limiting ion diffusion, increasing Rp and Rn. Optimized CN content enhances epoxy coating performance overall system durability material. ABSTRACT Corrosion‐protection
Martha Patricia Hernández‐Valencia, Tathagata Kar, Maura Casales‐Díaz, José Juan Ramos‐Hernández, América María Ramírez‐Arteaga, José Gonzalo González‐Rodríguez, Roy López‐Sesenes, Mohan Kumar Kesarla   +7 more
wiley   +1 more source

Recent Advances in AIE‐Active Polymers for Explosives Detection

PhotoAggregate, Volume 1, Issue 1, October 2026.
From linear polymers to porous frameworks and supramolecular assemblies, AIE has enabled highly emissive polymeric platforms for explosive detection. This review summarizes recent advances in AIE‐active polymers, highlighting structure–property relationships and sensing mechanisms.
Ming Hui Chua, Kang Le Osmund Chin, Bryan Yat Kit Hui, Ran Tao, Kok Chan Chong, Jianwei Xu   +5 more
wiley   +1 more source

Alkoxyallenes in Modern Synthesis: Reactivity, Catalysis, and Complexity Generation

Advanced Synthesis &Catalysis, Volume 368, Issue 17, 1 September 2026.
The last decade has witnessed a remarkable transformation in alkoxyallene chemistry. Although historically employed as synthetic equivalents of acrolein or as versatile 3C synthons, alkoxyallenes are now increasingly recognized as highly adaptable platforms for synthetic design.
A. Lanfranco, M. Rusconi, J. Saglietto, P. Renzi, A. Deagostino, E. Azzi   +5 more
wiley   +1 more source

An intramolecular inverse electron demand Diels–Alder approach to annulated α-carbolines

Beilstein Journal of Organic Chemistry, 2012
Intramolecular inverse electron demand cycloadditions of isatin-derived 1,2,4-triazines with acetylenic dienophiles tethered by amidations or transesterifications proceed in excellent yields to produce lactam- or lactone-fused α-carbolines.
Zhiyuan Ma, Feng Ni, Grace H. C. Woo, Sie-Mun Lo, Philip M. Roveto, Scott E. Schaus, John K. Snyder   +6 more
doaj   +1 more source

Synthesis, Characterization and ِAntimicrobial Activities of Some New Heterocyclic Schiff Bases Derived from Thiocarbohydrazide

Acta Chimica Slovenica, 2016
The reaction of prazolobenzothienopyrimidine-3-carbaldehyde 1 with thiocarbohydrazide afforded the Schiff’s base 3. The latter compound reacted with some electrophilic reagents to give 1,2,4-triazoles 4–6 and 1,2,4-triazines 7–9.
Kamelia El-mahdy, Azza El-Kazak, Mohamed Abdel-Megid, Magdy Seada, Osama Farouk   +4 more
doaj   +1 more source

Corn response to dicyandiamide and urea fertilizer technology in poorly drained claypan soils

Agronomy Journal, Volume 118, Issue 5, September/October 2026.
Abstract Nitrogen (N) is a macronutrient that many producers struggle to manage efficiently due to various loss mechanisms. It is challenging to manage optimum N use in poorly drained claypan soils, which are more prone to saturated conditions and gaseous N loss.
Dustin Steinkamp, Kelly A. Nelson, Gurbir Singh, Harpreet Kaur, Gurpreet Kaur, Mike Howell, Alan Blaylock   +6 more
wiley   +1 more source