Results 131 to 140 of about 140,419 (292)
Advanced Science, EarlyView.Tryptophan‐like dissolved organic matter (Try‐like DOM), a key component of organic matter in river ecosystems, demonstrates significant protective effects against plant viruses. The protective mechanism operates via a “swimming firewall” mode, whereby free Try‐like DOM attenuates ultraviolet (UV) radiation and scavenges reactive oxygen species ...
Yujie Wang +7 more
wiley +1 more source
Studies on Heteroaromaticity. XIX. Direct 1,3-Dipolar Cycloaddition of Hydroxamoyl Chlorides with Enamines [PDF]
, 1968 Tadashi Sasaki, Toshiyuki Yoshioka
openalex +1 more source
Topological Woodward-Hoffmann classification for cycloadditions in polycyclic aromatic azomethine ylides [PDF]
arXivThe study of cycloaddition mechanisms is central to the fabrication of extended sp2 carbon nanostructures. Reaction modeling in this context has focused mostly on putative, energetically preferred, exothermic products with limited consideration for symmetry allowed or forbidden mechanistic effects.
arxiv
Radical‐Polar Crossover Bicyclization Enables a Modular Synthesis of Saturated Bicyclic Amines
Advanced Science, EarlyView.Herein, we report the successful realization of a radical‐polar crossover bicyclization reaction from easily available cyclopropylamines and substituted alkenes through photoredox catalysis. This approach introduces an innovative methodology for the de novo synthesis of a diverse collection of 4/5‐, 5/5‐, 6/5‐,7/5‐ and 5/6‐fused saturated bicyclic ...
Dewei Feng +4 more
wiley +1 more source
Thermal [2 + 3] cycloaddition of imino compounds to 3-aroylaziridines. Synthesis of imidazolidines [PDF]
, 1969 J. W. LOWN, J. P. Moser, Robert Westwood
openalex +1 more source
Manganese‐Catalyzed Electrochemical Diazidation of Dehydroalanine Peptides
Advanced Science, EarlyView.A Mn(II)‐catalyzed electrochemical method achieves site‐selective diazidation of dehydroalanine peptides with NaN₃. This radical relay process tolerates diverse functional groups, delivers high yields, and enables precise peptide modification, offering a powerful tool for bioconjugation and therapeutic development.
Xinwei Hu +5 more
wiley +1 more source
Angewandte Chemie, EarlyView.Tetra‐ortho‐Azobenzenes (TOABs) in broad daylight: in recent years, TOAB photoswitches became indispensable tools for all‐visible‐light manipulation of chemistry, biology and materials. This review explores their unique photochemical properties, design and synthetic approaches, offering support in choosing a TOAB for a given application.
Francesca Cardano +2 more
wiley +2 more sources
Polymerizations by 1,3-Dipolar Cycloaddition Reactions. V. The 1,3-Dipolar Polycycloadditions of DinitrileN-Oxides with Diolefins [PDF]
, 1968 Yoshio Iwakura +3 more
openalex +1 more source
Global hybrid multiconfiguration pair-density functional theory [PDF]
arXiv, 2019 A global hybrid extension of variational two-electron reduced-density matrix (v2RDM)-driven multiconfiguration pair-density functional theory (MCPDFT) is developed. Using a linear decomposition of the electron-electron repulsion term, a fraction {\lambda} of the nonlocal exchange interaction, obtained from v2RDM-driven complete active-space self ...
arxiv
Advanced Energy and Sustainability Research, EarlyView.This review highlights recent advancements in converting lignocellulosic biomass to fuel precursors. It emphasizes the role of FUR and 2‐methylfuran in aldol condensation and hydroxyalkylation–alkylation reactions. The article discusses their efficiency, potential applications, and emerging technologies that promise cleaner and more sustainable energy ...
Errol D. Saluta +2 more
wiley +1 more source