Results 51 to 60 of about 60,973 (249)

Regioselective Synthesis of Novel N2- and N4-Substituted 7-Methylpyrazolo[4,5-e][1,2,4]thiadiazines

Molecules, 2006
The new compound 7-methylpyrazolo[4,5-e][1,2,4]thiadiazin-3(2H,4H)-one1,1-dioxide (5) was synthesized and its novel mono N2- or N4-substituted derivatives 6and 7 were prepared by regioselective N-alkylation of 5 with different molar ratios ofNaH and ...
Salvador Vega, Maria Teresa Molina, Wenfang Xu, Niangen Chen, Renzhang Yan, Xinyong Liu   +5 more
doaj   +1 more source

A One-Pot Synthesis of Triazolodiazepines

European Journal of Organic Chemistry, 2015
A one-pot sequential A3-coupling-azidation-cyclisation approach leading to potentially biologically active diazepine analogues has been developed. The implementation of the A3-coupling reaction ensures diversity. Attention is given to this so far rarely studied structural motif of fused heterocyclic diazepines.
Hooyberghs, Geert, Van Hove, Sofie, Jacobs, Jeroen, Van Meervelt, Luc, Van der Eycken, Erik   +4 more
openaire   +3 more sources

Advancing Lithium–Oxygen Batteries: Pioneering Cathode Catalyst Innovation and Artificial Intelligence‐Driven Design Paradigms

Advanced Materials, EarlyView.
This review summarizes the principles and challenges of nonaqueous lithium‐oxygen batteries and recent advances in cathode catalysts, including carbon‐based materials, metals, oxides, sulfides, nitrides, carbides, and redox mediators. It highlights emerging design strategies and artificial intelligence‐driven approaches, emphasizing data‐assisted ...
Yuqing Yao, Chongyang Hao, Karol Viviana Mejia‐Centeno, Malik Dilshad Khan, Shang Wang, Longqiu Li, Yanhong Tian, Andreu Cabot, Qing Sun   +8 more
wiley   +1 more source

One-pot Synthesis of Hollongdione from Dipterocarpol

Natural Product Communications, 2014
A one-pot synthesis of a hybrid triterpenoid-steroid molecule, hollongdione (22,23,24,25,26,27-hexanordammar-3,20-dion), was achieved in a yield of 89%, based on the selective dehydration of dipterocarpol following ozonolysis.
Irina E. Smirnova, Oxana B. Kazakova, Do Thi Thu Huong, El'za M. Minnibaeva, Alexandr N. Lobov, Kiryll Yu. Suponitsky   +5 more
doaj   +1 more source

One-Pot Synthesis of Epirubicin-Capped Silver Nanoparticles and Their Anticancer Activity against Hep G2 Cells

Pharmaceutics, 2019
Epirubicin-capped silver nanoparticles (NPs) were synthesized through a one-pot method by using epirubicin as both the functional drug and the reducing agent of Ag+ to Ag0. The preparation process was accomplished in 1 h.
Jun Ding, Guilin Chen, Guofang Chen, Mingquan Guo   +3 more
doaj   +1 more source

Ratiometric Mycotoxin Detection in Living Plants With Dual‐Emissive Nanosensors

Advanced Materials, EarlyView.
A minimally invasive microneedle patch integrates carbon dot‐embedded metal–organic frameworks as nanosensors to detect a key fungal toxin in living plants. The nanosensor produces a ratiometric fluorescence signal that enables early, non‐destructive diagnosis of fungal infection before visible symptoms, offering a new biomaterials‐based strategy for ...
Yuliang Li, Di Shen, Ziyang Huang, Suppanat Puangpathumanond, Calvin Thenarianto, Yue Zhao, Jolly Madathiparambil Saju, Rajani Sarojam, Dongmei Zhou, Tedrick Thomas Salim Lew   +9 more
wiley   +1 more source

Surface‐Ligand‐Dependent Excited‐State Dynamics in Aqueous CuInSe2/ZnS Quantum Dot–Chlorophyll Assemblies

Advanced Materials Interfaces, EarlyView.
CuInSe2/ZnS quantum dots are synthesized in water and coupled with chlorophyll to probe ligand‐controlled excited‐state interactions. Broad visible–NIR emission and high PLQY are observed. Time‐resolved measurements reveal shortened chlorophyll lifetimes, indicating dynamic quenching via Förster energy and/or charge transfer, highlighting surface ...
Özge İbiş, Hadi Jahangiri, Elif Çeltek, Caner Ünlü   +3 more
wiley   +1 more source

Strategic methods for the preparation of coumarin fused dihydroquinolines (CFDQ): A concise review

Results in Chemistry
Coumarin-fused dihydroquinolines (CFDQs) are fascinating heterocycles that have become intriguing to medicinal chemists due to their outstanding bioactivity.
Reshmi Bose, Tamanna Pradhan, Bholanath Pakhira, Manas Roy, Subrata Dolui, Ambrish Singh, Tanay Pramanik   +6 more
doaj   +1 more source

"One Pot" Synthesis of 1,5-Diaza-2,3,6,7-Thetrahydro-4-Methyl-Phenanthrene-4,8-Dione From Corresponding Bis-Beta-Amino Acid [PDF]

Iranian Journal of Chemistry & Chemical Engineering, 1999
The cyclization of b-anilino propionic acids in the presence of polyphosphoric acid (PPA) afforded the 2,3-Dihydroquinoline-4-(1H)-ones in good yields. N,N'-bis(2-carboxyethyl)-4-methyl-1,2-diaminobenzene (7) is cyclized under this condition to produce ...
Abbas Shokravi, Hedayat Jahanbin Sardrudi   +1 more
doaj  

Facile Synthesis and Application of Dibutyl Aminophosphonate Polymer for Robust Uranium Capture from Concentrated Nitric Acid Process Streams

Advanced Materials Interfaces, EarlyView.
Dibutyl aminophosphonate (DiBAP) resin enables rapid, highly selec ve recovery of trace U(VI) from strongly acidic streams, with excellent acid stability, efficient column performance, and quan ta ve regenera on using ammonium carbonate. ABSTRACT The recovery of trace uranium from strongly acidic streams generated during uranium processing is of ...
Vinita Kumari, Ritesh Ruhela, Mahesh Tiwari, Deepak Tyagi, Sanjay Kumar Sahu   +4 more
wiley   +1 more source