Results 141 to 150 of about 31,249,109 (227)
Flavin Catalysts in Organic Synthesis
Angewandte Chemie, EarlyView.Flavins and their congeners are potent catalysts for organic synthesis inspired by enzymatic transformations. In addition to catalysis in the flavin ground state via covalent intermediates, the excited singlet and triplet states unlock applications including photooxidation, photoreduction, and energy transfer via sensitization.
Jan Freudenberg, Golo Storch
wiley +2 more sources
User experience of the Milton Park bike-share scheme report of survey [PDF]
In February 2020, six electric bikes (e-bikes) were added to the Milton Park fleet of 18 ‘conventional’ shared bikes, with funding from the MultiCAV project. The scheme is operated by Bainton Bikes of Oxford using Donkey Republic software, and branded as
Bartle, Caroline +2 more
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Reactions of Terminal Olefins With Iron Carbenes
Angewandte Chemie, EarlyView.Iron carbenes react with terminal olefins and show productive metathesis or metathesis‐divergent pathways depending on the nature of the olefin. Reactions proceed through 2π + 2π cycloadditions to generate transient metallacyclobutane intermediates that undergo cycloreversion to generate the metathesis product or the metathesis‐divergent β‐hydride ...
Zachary S. Lincoln +2 more
wiley +2 more sources
Angewandte Chemie, EarlyView.1,2‐Aryl migration involving in situ‐generated alkyl iodine(III) species proceeds through a previously unrecognized 1,2‐C/I(III) dyotropic rearrangement. Migratory aryl fluorination, acetoxylation, and alkoxylation of 2‐alkyl‐2‐aryl‐3‐iodopropanoates provide α‐heterofunctionalized products, accompanied by aryl migration from the α‐ to the β‐position ...
Chen‐Xu Liu +3 more
wiley +2 more sources
Investigating shared bike usage patterns in correlation with weather conditions through the application of machine learning algorithms [PDF]
openThis Master's Thesis presents an analysis of shared bike usage based on weather conditions, utilizing machine learning algorithms capable of predicting future shared bike usage based on weather forecasts.
JAVANMARDI JALALABADI, MARZIEH
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NHC‐Copper(I)‐Mediated Functionalization of White Phosphorus
Angewandte Chemie, EarlyView.White phosphorus is functionalized by N‐heterocyclic carbene supported copper(I) complexes through redox‐neutral steps. Treatment of the resulting complexes with electrophiles releases the ligands from the metal center as asymmetrically substituted organophosphorus butterfly compounds.
Thomas M. Horsley Downie +4 more
wiley +2 more sources
Cobalt‐Catalyzed [2σ+2π] Cycloaddition via Site‐Selective Capture of Bicyclobutane Diradical
Angewandte Chemie, EarlyView.We report a Co(II)‐catalyzed strategy that combines thermal activation of bicyclo[1.1.0]butane (BCBs) with site‐selective radical capture to furnish head‐to‐head fused bicyclo[2.1.1]hexanes via [2σ+2π] cycloaddition with indoles. Detailed mechanistic studies (31P NMR, EPR, CV, and DFT) support the catalytic pathway, while phosphine‐oxide trapping and X‐
Tanmayee Nanda +8 more
wiley +2 more sources
Angewandte Chemie, EarlyView.A metal‐ and oxidant‐free electrochemical multicomponent di‐functionalization strategy that rapidly converts 1,1‐disubstituted alkenes into α‐tertiary primary amines with simultaneous installation of bio‐relevant sulfur or selenium motifs was devised for late‐stage functionalization. ABSTRACT Quaternary carbon centers, especially those bearing nitrogen,
Adrija Ghosh +4 more
wiley +2 more sources
Characterisation of e-scooter, e-bike and bicycle injuries by motor vehicle involvement: USA (2020-2024). [PDF]
Inj PrevSingichetti B +3 more
europepmc +1 more source
Increased injury severity and age-related mortality in trauma victims after e-bike versus conventional bicycle accidents: a concerning call to action! [PDF]
Patient Saf SurgÖzman DD +9 more
europepmc +1 more source