Results 101 to 110 of about 379,037 (236)
Advanced Science, EarlyView.Cross‐disciplinary endeavors are blossoming across the broad chemical sciences. This perspective provides a glimpse into the rewarding interdisciplinary journey taken by the Charles Loh research group in pioneering the σ‐hole based catalytic glycosylation strategy.
Charles C. J. Loh
wiley +1 more source
Effects of Halogen Bonding on 13C NMR Shifts of Iodotolan [PDF]
, 2019 Halogen bonding is the ability of heavier halogens to have noncovalent interactions similar to hydrogen bonding. By mixing two compounds that should halogen bond together and analyzing this mixture with carbon NMR spectroscopy, we attempted to
Long, James
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Advanced Science, EarlyView.Allenes emerge as powerful platforms for electrochemical functionalization through radical pathways. Selective radical addition at the central carbon triggers anodic oxidation and intramolecular cyclization, enabling efficient synthesis of oxazolines and oxazolidine‐2‐imines without external oxidants.
Pranjal Pyne +5 more
wiley +1 more source
Polybromides Attraction‐Repulsion Regulation Promotes High‐Performance Zinc–Bromine Static Battery
Advanced Science, EarlyView.Br3− attraction‐repulsion regulation enhances the reversibility and reaction kinetics of Zn–Br static batteries. Coin cell shows a high average discharge voltage of 1.73 V and a fast charge/discharge rate up to 32 mA cm−2. Pouch cell with a high areal capacity of 8.3 mAh cm−2 achieves a real capacity of 365 mAh after 100 cycles.
Jiamin Tang +6 more
wiley +1 more source
Advanced Science, EarlyView.We elucidate the electrochemical actuation mechanism of 2D material‐based electrodes within a MXene‐centered framework, linking atomic‐scale surface chemistry to macroscopic performance (see schematic). Mechanistically, the reduction of Ti─O─Ti sites in H2SO4 triggers the accumulation of hydrated ions at confined active sites, resulting in anomalous ...
Jiang Xu +6 more
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, 2014 Halogen bonding has recently experienced a renaissance, gaining increased recognition as a useful molecular interaction in the life sciences. Halogen bonds are favorable, fairly directional interactions between an electropositive region on the halogen ...
Lange, A +7 more
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Enantioselective Access to Trifluoromethylated Spirocyclopropyl Heterocycles
Advanced Science, EarlyView.We report a rhodium‐catalyzed asymmetric [2+1] spirocyclopropanation of methylene azacycles with trifluoromethyl carbenes in situ derived from fluoroalkyl triftosylhydrazones. ABSTRACT Chiral spirocyclopropyl heterocycles have emerged as privileged three‐dimensional structural motifs in medicinal chemistry.
Yuanhao Zhu +9 more
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Dual Nickel/Photoredox‐Catalyzed Regio‐ and Enantioselective Alkenylation of Epoxides
Advanced Science, EarlyView.Ni/photoredox‐catalyzed stereoconvergent cross‐electrophile coupling of racemic epoxides with alkenyl bromides is described, affording β‐alkenyl products with up to 95% ee, excellent E‐selectivity, and complete regiocontrol. These versatile intermediates enable diverse chiral synthons; mechanistic studies suggest a halide ring‐opening followed by ...
Hongyan Lan +4 more
wiley +1 more source
Turkish Journal of Orthodontics, 2005 The aim of our study was to compare shear bond strengths of orthodontic brackets bonded with chemically cured, halogen light cured and LED cured adhesive systems. 45 extracted human premolar teeth were randomly divided into 3 groups.
Hakan Türkkahraman +1 more
doaj +1 more source
Ortho‐Carborane‐Derived Halogen Bonding Organocatalysts
Multidentate neutral halogen bonding catalysts based on iodinated icosahedral ortho-carborane moieties are introduced. Co-crystallization-studies, calorimetric measurements, and 1H NMR titrations demonstrate their strong binding to halides and neutral ...
Huber, Stefan Matthias +5 more
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