Results 251 to 260 of about 17,390 (287)

An Insight into the Local Aromaticities of Polycyclic Aromatic Hydrocarbons and Fullerenes

Chemistry – A European Journal, 2003
AbstractIn this work we quantify the local aromaticity of six‐membered rings in a series of planar and bowl‐shaped polycyclic aromatic hydrocarbons (PAHs) and fullerenes. The evaluation of local aromaticity has been carried out through the use of structurally (HOMA) and magnetically (NICS) based measures, as well as by the use of a new electronically ...
Jordi, Poater, Xavier, Fradera, Miquel, Duran, Miquel, Solà   +3 more
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Aromatic–Aromatic Interactions Database, A2ID: An analysis of aromatic π-networks in proteins

International Journal of Biological Macromolecules, 2011
The geometrical arrangement of the aromatic rings of phenylalanine, tyrosine, tryptophan and histidine has been analyzed at a database level using the X-ray crystal structure of proteins from PDB in order to find out the aromatic-aromatic (π-π) networks in proteins and to understand how these aromatic rings are connected with each-other in a specific π-
Mukesh, Chourasia, G Madhavi, Sastry, G Narahari, Sastry   +2 more
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The Mannich Reaction Between Aromatic Ketones, Aromatic Aldehydes and Aromatic Amines

Synthesis, 1991
The acid-catalyzed Mannich reaction of acetophenones with benzaldehyde derivatives and aromatic amines gives 1,3-diaryl-3-(arylamino)propanones in high ...
Yi Lin, Lei Huangshu, Zou Junhua, Xu Xiujuan   +3 more
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Aromatic O-glycosylation

Carbohydrate Research, 2006
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Mårten, Jacobsson, Jesper, Malmberg, Ulf, Ellervik   +2 more
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Aromatic Pathways in Carbathiaporphyrins

The Journal of Physical Chemistry A, 2015
Magnetically induced current densities and current pathways have been calculated for carbaporphyrins and carbathiaporphyrins using the gauge including magnetically induced current (GIMIC) method. The aromatic character and current pathways are obtained from the calculated current density susceptibilities. The current-density calculations show that five
Valiev, Rashid R., Fliegl, Heike, Sundholm, Dage   +2 more
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Nucleophilic aromatic substitution on aromatic aldimines

Tetrahedron Letters, 1993
Abstract Ortho-methoxy-substituted benzaldimines derived from 3-amino-2,4-dimethylpentane undergo efficient nucleophilic aromatic substitution with typical organolithium reagents. The aldimine products can be hydrolyzed under mild conditions to provide ortho-alkyl or ortho-phenyl benzaldehyde derivatives.
Lec A. Flippin, David S. Carter, Nathan J.P. Dubree   +2 more
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Conversion of N‐Aromatic Amides to O‐Aromatic Esters.

ChemInform, 2002
AbstractFor Abstract see ChemInform Abstract in Full Text.
Daniel T, Glatzhofer, Raymond R, Roy, Kimberly N, Cossey   +2 more
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Möbius Aromaticity and Delocalization

Chemical Reviews, 2005
AbstractFor Abstract see ChemInform Abstract in Full Text.
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Taking the Aromaticity out of Aromatic Interactions

Angewandte Chemie, 2011
Jacob W G, Bloom, Steven E, Wheeler
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Aromatic Metamorphosis: Skeletal Editing of Aromatic Rings

Accounts of Chemical Research
ConspectusAromatic rings are fundamental structural motifs found in natural products, synthetic intermediates, pharmaceuticals, agrochemicals, and functional materials. While transformations at the periphery of these rings are well-established, modifying their core frameworks has remained an underexplored frontier.
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