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Showing 1 to 20 of 842 for “"aryl"”.
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Substituted Aryl Boronic Acids
Made available in DSpace on 2014-12-05T19:36:35Z (GMT). No. of bitstreams: 1 0020886.pdf: 5081472 bytes, checksum: 57b816180379bb08982e9109efe5dd0a (MD5) Previous issue date: 1957
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The acidic sulfonimidation of aryl–oxazolines and the electrophilic fluorination of aryl–oxazolines
<p>Aryl oxazolines have been employed as directing groups for several different coupling reactions. In the exploration of using phenyl oxazoline as a directing group for electrophilic fluorination, it was discovered that acidic sulfonimide nucleophiles including dibenzenesulfonimide, …
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Structure and Reactivity of Aryl Carbenes and Aryl Nitrenes: Experimental and Computational Approaches
Part one. Three isomeric aryl carbenes, 1,8-diaza-9-fluorenylidene (18DFL), 3,6-diaza-9-fluorenylidene (36DFL), and 4,5-diaza-9-fluorenylidene (45DFL) were generated by photolyses of their corresponding diazo compounds. The physical and chemical behaviors of the diazo compounds and carbenes were …
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Fluorine-Containing Poly(aryl ethers)
… mechanical, and electrical properties of poly(aryl ethers). While the presence of fluorine is known to improve these properties, it is also very expensive; therefore, determination of the best placement of fluorine in the polymer backbone is necessary in order to maximize the above benefits …
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Time-Resolved Studies of Aryl Carbenes
… 440 nm to 640 nm probe) was used to study three aryl carbenes generated by photolysis of their parent diazo compounds in fluid solution. Irradiation of 9-diazofluorene generates a transient with an absorption maximum at 470 nm which is believed to be triplet fluorenylidene. The rate constant for …
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Greener Photoredox-Catalyzed Phosphonations of Aryl Halides
… have been used to access these motifs, aryl halides remain one of the most desirable coupling partners owing to their low cost, commercial availability, and regioselective reactivity. Traditional phosphonation often requires the use of harsh reductants in the presence of liquid ammonia, …
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Radical anion rearrangements. aryl cyclopropyl ketyl anions
Aryl cyclopropyl ketones have often been employed as diagnostic probes for single electron transfer (SET) in organic chemical reactions. The implicit assumption in such studies is that the formation of rearranged product(s) can be ascribed to the intermediacy of a ketyl anion. Through a detailed …
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Synthesis of 3-Aryl-2-(2-aryl-2-oxoethyl)pyrido[2,3-d]-4(3H)pyrimidones and 3-Aryl-2-(2-arylethenyl)pyrido[2,3-d]-4(3H)pyrimidones as Potential Antiepileptic Drugs
A series of 2-alkyl-3-arylpyrido[2,3-d]pyrimidones were synthesized for testing as potential antiepileptic drugs. The goal was to achieve better neurological activity and/or lower toxicity than displayed by a series of 2-alkyl-3-aryl-4(3H)-quinazolinones prepared previously in our research group. …
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Exploring the role and the function of Aryl Hydrocarbon Receptor (AhR) and Aryl Hydrocarbon Nuclear Translocator (ARNT) in T cells
The Aryl Hydrocarbon Receptor (AhR) and the Aryl Hydrocarbon Nuclear Translocator (ARNT) play a role in mediating transcriptional responses to environmental pollutants, including the highly toxic compound 2,3,7,8-tetrachlorodibenzo -p-dioxin (TCDD) but also endogenous physiological ligands. More …
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