Results 221 to 230 of about 38,937 (354)
Cyanide Media in the Differentiation of Enteric Bacteria [PDF]
, 1956 P. R. Edwards, Mary A. Fife
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Large‐Scale Chemoenzymatic Synthesis of a Glycophorin A Tetrasaccharide Motif and Its Analogues
Asian Journal of Organic Chemistry, EarlyView.A large‐scale chemoenzymatic method was developed to synthesize natural and modified analogues of the Glycophorin A tetrasaccharide with either C9 or C5 terminal α‐2,3‐sialic acid variants. Selective α‐2,6‐sialylation of galactosamine was achieved by maintaining acetylation of the galactose during the course of enzymatic reactions. The products can aid
Ivan A. Gagarinov +5 more
wiley +1 more source
Access to N‐Monofluoromethylated (Thio)Carbamates, Formamides, Alkynamides, and Related Derivatives
Angewandte Chemie, EarlyView.The first general synthetic access to N‐CH₂F and N‐CHRF carbamates, thiocarbamates, formamides, alkynamides, and related compounds is disclosed. The method involves the direct synthesis of carbamoyl fluoride building blocks from readily available amines, followed by their derivatization. Abstract This work presents the first general synthetic access to
Filip G. Zivkovic +3 more
wiley +2 more sources
MICROBIOLOGICAL ASSAYS FOR VITAMIN B12: A CYANIDE ENHANCEMENT EFFECT
, 1951 J. M. Cooperman, R. Drucker, B. Tabenkin
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Asian Journal of Organic Chemistry, EarlyView.(Z)‐2‐oxazolines are available in a stereoselective fashion by cyclization of propargylic amides with internal triple bonds in the presence of HCl generated in situ from hexafluoroisopropanol (HFIP) and TMSCl. Response surface methodology was crucial to optimize the reaction conditions.
Nicholas Jankowski, Norbert Krause
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Angewandte Chemie, EarlyView.Luminescent lanthanide emitters typically need sensitization from an attached chromophore – an “antenna” – to have useful emission intensities. Here we show that the mechanical bond can be used to connect the antenna to the emitter, providing unique stimuli‐responsiveness to the resulting assemblies.
Anja Ramström +5 more
wiley +2 more sources
Design of Core@Shell Nanoparticles Based on Gold and Magnetic NiFe Prussian-Blue Analogues Featuring Shape-Dependent Magnetic and Electrochemical Activity. [PDF]
Inorg ChemAzeem S +6 more
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Enantiopure Chiral Crystals: A Powerful Tool for Absolute Asymmetric Synthesis
Asian Journal of Organic Chemistry, EarlyView.This review covers absolute asymmetric syntheses, which allow the preparation of enantiomerically enriched chiral compounds from achiral precursors. By exploiting the crystallization of certain compounds as a conglomerate, enantiopure chiral crystals are spontaneously obtained.
Jiacheng Li, Valérie Alezra
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Angewandte Chemie, EarlyView.Ultrafast pump‐probe spectroscopies show that irradiation of a square Fe/Co Prussian blue analogue induces electron transfer within one Fe–Co subunit followed by fast spin crossover, and coupled equilibria between all states trigger a second electron transfer coupled to spin crossover in the other Fe–Co subunit on a ns timescale.
Jan‐Hendrik Borter +8 more
wiley +2 more sources