Results 131 to 140 of about 15,610 (266)

Synthesis of Heterocyclic Compounds Derived from 2-Mercapto Quinoline

Ibn Al-Haitham Journal for Pure and Applied Sciences, 2017
2-Mercapto quinoline was used as precursor for synthesis of new heterocyclic derivatives of quinoline nucleus such as pyrazole (3), pyrazolone (4), 1,3,4-oxadiazole (5) and 1,2,4-triazole (8). New Schiff bases (9a-e) were obtained from the reaction of
A. H. Sharba, H. A. Hassan, D. F. Hassan
doaj  

Synthesis and anti-Aphid Aphis gossypii (Glover) activity of some new quinoline derivatives [PDF]

, 2010
A series of quinoline derivatives have been elaborated fromreaction of 2-(m- and p-acetylanilino)-quinolines 6a-b withaldehydes under Claisen-Schmidt conditions followed by cyclization with phenyl hydrazine and hydroxylamine.
El Kafafy, Abdel Kader, El-Mageed, Ahmed, Mohamed, Aly, Nawwar, Galal   +3 more
core  

Synthetic polymer nanocarrier enhances dsRNA stability but not RNAi efficacy in Brassicogethes aeneus

Pest Management Science, EarlyView.
Experimental setup for dsRNA feeding in Brassicogethes aeneus to evaluate the effect of a synthetic polymer nanocarrier on RNAi efficiency. The experiment assessed whether the nanocarrier enhances RNAi after oral dsRNA delivery. (a) Stability of dsRNA–nanocarrier complexes was tested in simulated gut conditions. (b) Gene expression of αCOP and dre4 was
Triin Kallavus, Liina Soonvald, Iris Callewaert, Ana Isabel Silva, Ericmar Ávila Dos Santos, Silva Vilumets, Riina Kaasik, Sven Vereecken, Lenny Van Daele, Peter Dubruel, Jonathan Willow, Clauvis Nji Tizi Taning, Kristof De Schutter, Eve Veromann   +13 more
wiley   +1 more source

Susceptibility of Phthorimaea absoluta (Meyrick) (Lepidoptera: Gelechiidae) to novel and established insecticides in Brazil: resistance survey, baseline, and implications for management

Pest Management Science, EarlyView.
Baseline susceptibility of Phthorimaea absoluta to novel insecticides isocycloseram and tolfenpyrad was established in Brazil. Diagnostic doses were proposed for early resistance detection. Early tolfenpyrad tolerance and abamectin‐driven cross‐tolerance to isocycloseram via oxidases highlight cross‐resistance risks, emphasizing the need for routine ...
Vitor Quintela, Teófilo P Langa, José VCR Dantas, Marcos de Oliveira, Herbert AA Siqueira   +4 more
wiley   +1 more source

One‐Pot Amidation/C─H Halogenation by an Efficient Electrochemical Cascade

Angewandte Chemie, Volume 138, Issue 19, 4 May 2026.
A sustainable electrochemical cascade enables the one‐pot synthesis of regioselectively halogenated N‐aryl amides from readily available amines and acyl halides under mild conditions. The method merges amidation and C─H halogenation in a single operational step, delivering broad substrate scope, high selectivity, and scalability, and provides an ...
Sudipta Ponra, Ruzal Sitdikov, Hasil Aman, Alyssio Calis, Gergely Laczkó, Virgile Rouffeteau, Maxime R. Vitale, Imre Pápai, Oscar Verho   +8 more
wiley   +2 more sources

Design, synthesis, and bioevaluation of pyrazole-containing tubulin polymerisation inhibitors based on conformational constraint strategy

Journal of Enzyme Inhibition and Medicinal Chemistry
Based on conformational preference of SMART analogues and conformational constraint strategy, two series of new tubulin polymerisation inhibitors (4a − 4k and 5a − 5h/6a − 6h) were designed via hydrogen bonding, steric effect (for 4a − 4k) and ring ...
Zhongqiao Sun, Jiahao Wang, Fengwei Li, Liancheng Huang, Shide Zheng, Qi Guan, Zhaohua Wang, Weige Zhang   +7 more
doaj   +1 more source

The continuing significance of chiral agrochemicals

Pest Management Science, Volume 81, Issue 4, Page 1697-1716, April 2025.
In the time frame 2018–2023, around 43% of the 35 chiral agrochemicals introduced to the market (herbicides, fungicides, insecticides, acaricides, and nematicides) contain one or more stereogenic centers in the molecule, and almost 69% of them have been marketed as racemic mixtures of enantiomers or stereoisomers.
Peter Jeschke
wiley   +1 more source

Advances in the Different Synthetic Routes of Fluorinated Hydrazines

The Chemical Record, EarlyView.
This review highlights the various routes to the preparation of fluorinated hydrazines, thereby promoting the exploration of innovative methods for the synthesis of new N‐fluorinated hydrazines. Their synthesis mainly involves synthetic routes such as organometallic, organocatalytic, and photocatalytic.
Dimitra Kyrko, Benoît Crousse
wiley   +1 more source

Towards Hybrid Density Functional Calculations of Molecular Crystals via Fragment-Based Methods

, 2018
We introduce and employ two QM:QM schemes (a quantum mechanical method embedded into another quantum mechanical method) and report their performance for the X23 set of molecular crystals.
Boese, A. Daniel, Dolgonos, Grygoriy A., Loboda, Oleksandr A.   +2 more
core   +1 more source

Dimethyl‐, Diethyl‐, and Propylene Carbonates: An Emerging Class of Green Solvents for Organic Synthesis

The Chemical Record, EarlyView.
This review highlights recent advances in the use of organic carbonates, dimethyl carbonate (DMC), diethyl carbonate (DEC), and propylene carbonate (PC), as solvents in organic synthesis. Based on over seventy studies from the past 6 years, it shows their application in different organic reaction types, emphasizing their role in safer and more ...
Gabriela T. Quadros, Livia C. L. Valente, Thiago Barcellos, Daniela Hartwig, Laura Abenante, Eder J. Lenardão   +5 more
wiley   +1 more source