Results 61 to 70 of about 15,657 (274)
Asymmetric Hydrogenation vs Transfer Hydrogenation in the Reduction of Cyclic Imines [PDF]
, 2018 A comparison between the two most common reduction approaches for obtaining chiral amines, asymmetric hydrogenation (AH) versus asymmetric transfer hydrogenation (ATH), was accomplished by using iridium complexes based on atropoisomeric diphosphines and ...
G. Facchetti +3 more
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Advanced Sustainable Systems, EarlyView.This study explores polyoxometalate‐based hybrids with varying dimensionalities, linking molecular, polymeric, and framework structures to supercapacitor performance. The results highlight how structural tuning enhances surface area, porosity, and charge transport, offering insights into designing efficient energy storage materials.
Daria Nowicka +6 more
wiley +1 more source
A divergent approach to benzylisoquinoline-type and oxoaporphine alkaloids via regioselective direct ring metalation of alkoxy isoquinolines [PDF]
, 2015 Supramolecular templating techniques have been widely used to direct the formation of porous materials with the goal of introducing permanent mesoporosity. While surfactant-directed self-assembly has been exploited for inorganic materials such as titania,
Bracher, Franz, Melzer, Benedikt
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Beilstein Journal of Organic Chemistry, 2019 A series of novel 3-methylphosphonylated [1,2,4]triazolo[4,3-a]pyridines was accessed through a 5-exo-dig-type cyclization of chloroethynylphosphonates and commercially available N-unsubstituted 2-hydrazinylpyridines. In addition, 3-methylphosphonylated [
Aleksandr S. Krylov +4 more
doaj +1 more source
Acta Crystallographica Section C Crystal Structure Communications, 2012 The title compound, C9H8N2, presents two almost identical independent molecules in the asymmetric unit, both of them exhibiting an extremely planar isoquinoline core (maximum r.m.s. deviation = 0.014 Å). The most significant deviation is found in the –NH2groups, which present a noticeable pyramidalization around the N atom, a feature also present in ...
Maria Atria, Ana +2 more
openaire +5 more sources
Azides in the Synthesis of Various Heterocycles [PDF]
, 2022 In this review, we focus on some interesting and recent examples of various applications of organic azides such as their intermolecular or intramolecular, under thermal, catalyzed, or noncatalyzed reaction conditions.
Abd-Elhamid, Ahmed I. +8 more
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Advanced Science, EarlyView.This study uses gut microbiome data to predict corticosteroid response in patients with immune thrombocytopenia (ITP). Fecal samples from 212 patients with ITP are sequenced. Six machine‐learning algorithms are used to train predictive models. The support vector machine‐based model integrated clinical data and selected microbial species, diversities ...
Feng‐Qi Liu +38 more
wiley +1 more source
Microwave-assisted synthesis of α-aryl malonates: Key intermediates for the
Arabian Journal of Chemistry, 2016 We disclose a new microwave-assisted protocol for the effective α-arylation of diethyl malonate. The coupling of aryl halides with diethyl malonate proceeds smoothly in short reaction time in the presence of a catalytic amount of Cu(OTf)2, 2-picolinic ...
Mohamed A. Ibrahim
doaj +1 more source
Stereochemical studies on protonated bridgehead amines. ^1H NMR determination of cis and trans B-C ring-fused structures for salts of hexahydropyrrolo [2,1-a] isoquinolines and related C ring homologs. Capture of unstable ring-fused structures in the solid state [PDF]
, 1989 Acid-addition salts of tricyclic isoquinolines 2a/b, 3a/b, 4a-4c, 5, 6a/b, 7, 8a/b, 9a/b, and 17a/b were studied by high-field ^1H NMR in CDCl_3 solution.
Inners, Ruth R. +6 more
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Synthesis of isoquinolines by irradiation of 1-methoxy-2-azabuta-1,3-dienes in a neutral medium [PDF]
, 2001 We describe, for the first time, the photocyclization of 2-azadienes in a neutral medium. The reaction leads to the formation of isoquinolines. © 2001 Elsevier Science Ltd.
Campos, P.J., Caro, M., Rodríguez, M.A.
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