Results 71 to 80 of about 36,653 (344)
Storing the wisdom: chemical concepts and chemoinformatics [PDF]
, 2015 The purpose of the paper is to examine the nature of chemical concepts, and the ways in which they are applied in chemoinformatics systems. An account of concepts in philosophy and in the information sciences leads to an analysis of chemical concepts ...
Ash +57 more
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Synthesis of Benzodithieno[5.5.5.6]Fenestranes: Unexpected Epimerization and Regiochemical Outcomes
Asian Journal of Organic Chemistry, EarlyView.Isomeric [5.5.5.6]fenestranes annulated with one benzene and two thiophene rings are accessible via di‐2‐ and di‐3‐thienylspirane intermediates. The key double cyclization step involves surprising stereoselectivity and regioselectivity. In particular, cis‐di(2‐thienyl)spirane precursors lead to the all‐cis‐fenestrane skeleton by an unexpected acid ...
Björn Bredenkötter +5 more
wiley +1 more source
Bioorganic chemistry. Laboratory classes [PDF]
, 2019 УЧЕБНО-МЕТОДИЧЕСКИЕ ПОСОБИЯХИМИЯ ОРГАНИЧЕСКАЯБИООРГАНИЧЕСКАЯ ХИМИЯИНОСТРАННЫЕ СТУДЕНТЫBIOORGANIC CHEMISTRYLABORATORY CLASSESЛАБОРАТОРНЫЕ ЗАНЯТИЯПособие написано в соответствии с типовой учебной программой по биоорганической химии для студентов высших ...
Hidranovich, L. G., Khodos, O. A.
core
Reaktionsunterschiede stereoisomerer Äthylenhalogenide. I [PDF]
Berichte der deutschen chemischen Gesellschaft, 1912 n ...
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Inside the isomers: the tale of chiral switches [PDF]
, 2004 Reproduced with permission from Australian Prescriber The document attached has been archived with permission from the publisher/copyright holder.Chiral drugs are made up of molecules with the same chemical structure, but different three-dimensional ...
Bochner, F., Foster, D., Somogyi, A.
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Asian Journal of Organic Chemistry, EarlyView.A straightforward method for constructing a tetrasubstituted carbon center through the in situ formation of 3‐methyleneisoindolinones as reactive intermediates has been developed. This process involves an acid‐catalyzed Meyer‐Schuster rearrangement of isoindolinone‐based propargylic alcohols, followed by an intermolecular Friedel‐Crafts alkylation ...
Arben Beriša +4 more
wiley +1 more source
Über stereoisomere Äthylmercapto‐bernsteinsäuren [PDF]
Berichte der deutschen chemischen Gesellschaft (A and B Series), 1921 n ...
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Ambient-pressure molecular superconductor with a superlattice containing layers of tris(oxalato)rhodate enantiomers and 18-crown-6 [PDF]
, 2017 We report a novel multilayered organic-inorganic hybrid material, β”-(BEDT-TTF)2[(H2O)(NH4)2Rh(C2O4)3].18-crown-6. This is the first molecular superconductor to have a superlattice with layers of both BEDT-TTF and 18-crown-6, and also the first with the ...
Alexander L. Morritt +7 more
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A new fundamental type of conformational isomerism [PDF]
, 2018 © 2018 The Author(s). Isomerism is a fundamental chemical concept, reflecting the fact that the arrangement of atoms in a molecular entity has a profound influence on its chemical and physical properties.
Blake, IM +7 more
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Ueber zwei stereoisomere Methylcarbocaprolactonsäuren [PDF]
Berichte der deutschen chemischen Gesellschaft, 1896 n ...
openaire +3 more sources