Results 121 to 130 of about 68,150 (234)
Chemical Switching Between B2N and B2C Homoaromaticity
Angewandte Chemie, EarlyView.We report the synthesis of homoaromatic 1‐aza‐2,4‐diazadiboretane with a bicyclic four‐membered NB2C motif and demonstrate experimentally and theoretically that the homoaromatic delocalization can also be chemically shifted from the B2N to the B2C moiety by deprotonation of the ring carbon atom.
Tim Wiesmeier +5 more
wiley +2 more sources
Angewandte Chemie, EarlyView.A biobased tricyclic thionolactone undergoes selective isomerization ring‐opening polymerization to yield a high‐molecular‐weight polythioester with an exceptionally high Tg of 171°C, exceeding that of the analogous polyester. The polythioester efficiently depolymerizes through backbiting, while its hydrolysis and methanolysis reveal the critical ...
Eva Harsevoort +4 more
wiley +2 more sources
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
Bike-sharing system: a big-data perspective
, 2017 Bike-sharing systems, as a green travel way, recently have been widely spreading over 1000 cities around the world. How to plan and optimize such systems receive attention in academia as well as in practice. However, scientific literature about planning,
G Xie (11832605) +3 more
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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
, 1993 Flier promoting a concert by the bands Jawbox, Liquor Bike, and Onespot Fringehead at The Hour Haus in Baltimore, Maryland on April 23 ...
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Optimizing Bike Sharing Systems in Smart Cities: A Machine Learning Forecasting Model [PDF]
openI sistemi di bike sharing sono emersi come una chiave di volta della mobilità urbana nelle Smart City, offrendo numerosi vantaggi tra cui una maggiore comodità, una riduzione della congestione del traffico, una diminuzione delle emissioni e un ...
KAEDBEY, JAD
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Jerrabomberra Mini Bike Track, Australian Capital Territory [picture].
, 1970 Part of the collection: Photographs of Jerrabomberra Mini Bike Track, Australian Capital Territory.; Also available in an electronic version via the Internet at: http://nla.gov.au/nla.pic ...
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Greater muscle mass does not affect peripheral hypercapnic chemosensitivity during exercise in healthy adults. [PDF]
Physiol RepAguero AJ, Doherty CJ, Dominelli PB.
europepmc +1 more source