Results 81 to 90 of about 18,857 (217)
European Journal of Organic Chemistry, Volume 29, Issue 18, 14 May 2026.This electrochemical methodology allows the preparation of bridged tricyclic scaffolds through a rapid increase in the molecular complexity of simple and readily accessible starting materials. Alcohols proved to be the most efficient nucleophiles, as well as 6‐chloropurine. Plausibly, the process involves an anodic oxidative dearomatization to generate
Emanuele Cartamina +4 more
wiley +1 more source
Zeitschrift für Naturforschung B, 1972 A new synthesis has been developed for the hitherto unreported 2-substituted-3-oxo-4H-1,4-oxazines 3b-3j via the cyclodehydrohalogenation of N-aryl-N-dichloroacetyl-2-amino-4′-nitroacetophenones in dimethyl sulfoxide with potassium t-butoxide. The structures of all the oxazine derivatives have been verified by IR and NMR spectroscopy and correlations ...
openaire +1 more source
Chan–Lam Cross‐Coupling With Alkylboron Reagents: From Transmetallation to Radical Pathways
European Journal of Organic Chemistry, Volume 29, Issue 18, 14 May 2026.Alkylative Chan–Lam coupling overcomes intrinsic transmetallation limitations of alkylboron reagents by engaging radical pathways. Recent advances reveal how radical and radical–polar crossover mechanisms enable mild C(sp3)—heteroatom bond formation. This minireview highlights key mechanistic insights and emerging strategies that transform alkylboron ...
Nicolas G.‐Simonian +3 more
wiley +1 more source
Solvent‐Controlled Electrochemical Cyclization of Areneazo‐2‐(2‐nitro)propanes to Benzo[c]cinnolines
Advanced Synthesis &Catalysis, Volume 368, Issue 9, 5 May 2026.Solvent‐mediated redox pathway control enables the first electrochemical cyclization of areneazo‐2‐(2‐nitro)propanes to benzo[c]cinnolines. Mixed solvent systems containing hexafluoroisopropanol (HFIP) and MeOH additives widen the redox potential gaps and stabilize diazonium intermediates via hydrogen bonding, favoring oxidative intramolecular ...
Chohee Lee +3 more
wiley +1 more source
Is environmentally-friendly agriculture less profitable for farmers ? evidence on integrated pest management in Bangladesh [PDF]
Concerns about the sustainability of conventional agriculture have prompted widespread introduction of integrated pest management (IPM), an ecologically-based approach to control of harmful insects and weeds.
Dasgupta, Susmita +2 more
core
Advanced Synthesis &Catalysis, Volume 368, Issue 9, 5 May 2026.Heterogeneous‐catalyzed selective and versatile hydrogenative functionalizations of phthalimides have been developed for the first time. By using a solid nanocomposite formed by [Ag/Al2O3] material in combination with [H‐BETA] zeolite as cocatalyst, a broad range of 3‐functionalized isoindolinones have been accesed in one‐pot from phthalimides, H2 and ...
Carles Lluna‐Galán +2 more
wiley +1 more source
Facile Access to N‐Substituted Pyridyl Ligands
Advanced Synthesis &Catalysis, Volume 368, Issue 9, 5 May 2026.A modular, robust, and versatile Buchwald–Hartwig amination protocol that enables the rapid synthesis of bipyridine, phenanthroline, terpyridine, and pybox ligands bearing dialkylamine, diarylamine, and heteroaromatic N‐substituents. Pyridyl motifs equipped with N‐substituents can be powerful ligands for catalysis, yet their broader adoption is limited
Adam Petrik +5 more
wiley +1 more source
Generation of a Ground‐State Electron Donor Utilizing Stored Light Energy
Chemistry – A European Journal, Volume 32, Issue 17, 5 May 2026.Chemically stored light energy enables the generation of dianion reductants (∼−2.7 V) from vicinal diols derived from diaryl ketone photodimerization. These ground‐state electron donors efficiently reduce challenging substrates at room temperature, including aryl bromides, alkyl iodides, and sulfonamides.
Marc Taillefer +2 more
wiley +1 more source
High temperature ablative foam [PDF]
, 1992 An ablative foam composition is formed of approximately 150 to 250 parts by weight polymeric isocyanate having an isocyanate functionality of 2.6 to 3.2; approximately 15 to 30 parts by weight reactive flame retardant having a hydroxyl number range from ...
Liu, Matthew T.
core +1 more source
Tissue Engineered Human Elastic Cartilage From Primary Auricular Chondrocytes for Ear Reconstruction
Advanced Functional Materials, Volume 36, Issue 36, 4 May 2026.Despite over three decades of research, no tissue‐engineered solution for auricular reconstruction in microtia patients has reached clinical translation. The key challenge lies in generating functional elastic cartilage ex vivo. Here, we integrate synergistic cell‐biomaterial strategies to engineer auricular grafts with mechanical and histological ...
Philipp Fisch +13 more
wiley +1 more source