The harpacticoid copepod Tigriopus californicus has been recognized as a model organism for the study of marine pollutants. Furthermore, the nutritional profile of this copepod is of interest to the aquafeed industry.
Alfonso Prado-Cabrero +2 more
doaj +1 more source
On biological homochirality [PDF]
Generalizing Landau's spontaneous symmetry breaking arguments using the standard groupoid approach to stereochemistry allows reconsideration of the origin of biological homochirality.
Rodrick Wallace
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A Failed Encounter in Mathematics and Chemistry: The Folded Models of van ‘t Hoff and Sachse [PDF]
Three-dimensional material models of molecules were used throughout the 19th century, either functioning as a mere representation or opening new epistemic horizons. In this paper, two case studies are examined: the 1875 models of van ‘t Hoff and the 1890
Friedman, Michael
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Free radical 5-exo-dig cyclization as the key step in the synthesis of bis-butyrolactone natural products: experimental and theoretical studies [PDF]
Radical cyclization reactions were performed by 5-exo-dig mode to yield cis-fused bicyclic systems, leading to the synthesis of bis-butyrolactone class of natural products.
Allinger +23 more
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Stereochemical outcomes of C–F activation reactions of benzyl fluoride
In recent years, the highly polar C–F bond has been utilised in activation chemistry despite its low reactivity to traditional nucleophiles, when compared to other C–X halogen bonds.
Neil S. Keddie +4 more
doaj +1 more source
Iron-mediated Preparation of Vinylcyclopropanes. Scope, Mechanism, and Applications [PDF]
The addition of stabilized carbon nucleophiles to tricarbonyl(1-methoxycarbonylpentadienyl)iron(1+) cation (1a) proceeds via attack at C2 on the face of the ligand opposite the Fe(CO)3 group to generate tricarbonyl(pentenediyl)iron complexes 2. Oxidation
Cao, Yeyu +3 more
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Synthesis of cyclopropanes via organoiron methodology: stereoselective preparation of cis-2-(2’-carboxycyclopropyl)glycine [PDF]
A stereoselective route to cis-2-(2′-carboxycyclopropyl)glycine has been developed. exo-Nucleophilic addition to the (bicyclo[5.1.0]octadienyl)iron(1+) cation establishes the relative stereochemistry at the cyclopropane ring and the α-stereocenter ...
Donaldson, William, Wallock, Nathaniel J
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Polyethers for biomedical applications. Polymerization of propylene oxide by organozinc/organotin catalysts [PDF]
The polymerization of propylene oxide to obtain a high-molecular-weight polymer with an atactic structure required for the application as artificial blood vessels was investigated using combinations of organozinc and organotin compounds as catalyst.
Bantjes, Adriaan +3 more
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Crystal structure of 9-methacryloylanthracene
In the title compound, C18H14O, with systematic name 1-(anthracen-9-yl)-2-methylprop-2-en-1-one, the ketonic C atom lies 0.2030 (16) Å out of the anthryl-ring-system plane. The dihedral angle between the planes of the anthryl and methacryloyl moieties is
Aditya Agrahari +4 more
doaj +1 more source
Enantioselective PCCP Brønsted acid-catalyzed aza-Piancatelli rearrangement. [PDF]
An enantioselective aza-Piancatelli rearrangement has been developed using a chiral Brønsted acid based on pentacarboxycyclopentadiene (PCCP). This reaction provides rapid access to valuable chiral 4-amino-2-cyclopentenone building blocks from readily ...
Delgado, Jose M +5 more
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