Results 201 to 210 of about 15,429 (247)
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Regioselective Allylgallation of Terminal Alkynes.
ChemInform, 2005AbstractFor Abstract see ChemInform Abstract in Full Text.
Phil Ho, Lee +4 more
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2012
This chapter explores regioselectivity. Chemoselectivity means that there are two separate functional groups and that a reagent must choose between them. By contrast, regioselectivity implies that there is one functional group that can react in two different places and a reagent must choose where to react.
Jonathan Clayden +2 more
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This chapter explores regioselectivity. Chemoselectivity means that there are two separate functional groups and that a reagent must choose between them. By contrast, regioselectivity implies that there is one functional group that can react in two different places and a reagent must choose where to react.
Jonathan Clayden +2 more
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Synthesis of Regioselectively Deuterated Cyclopropanes
Synthetic Communications, 1996Abstract A regioselective synthesis of deuterated aliphatic cyclopropanes has been developed to furnish labeled substrates for gas-phase ion-molecule reaction studies.
Duffault, J.M. +3 more
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Regioselectivity-Switchable Hydroarylation of Styrenes
Journal of the American Chemical Society, 2010Cobalt-phosphine and cobalt-carbene catalysts have been developed for the hydroarylation of styrenes via chelation-assisted C-H bond activation, to afford branched and linear addition products, respectively, in a highly regioselective fashion. Deuterium-labeling experiments suggested a mechanism involving reversible C-H bond cleavage and olefin ...
Ke, Gao, Naohiko, Yoshikai
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Regioselective Oxidation of Isoxazolidines to Ketonitrones
HETEROCYCLES, 2006AbstractChemInform 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.
Osamu Iwamoto +3 more
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Regioselective Hydrodebromination of Polybrominated Indoles
European Journal of Organic Chemistry, 2014AbstractThe mixture of sodium borohydride and N,N,N′,N′‐tetramethylethylenediamine in combination with a palladium catalyst is a mild and efficient system for the regioselective hydrodebromination of polybrominated indoles with both N‐donating and N‐withdrawing substituents [N‐methyl‐ and N‐(methoxycarbonyl)indoles, respectively].
CHELUCCI, Giorgio Adolfo +2 more
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The regioselective synthesis of monomethoxynaphthylene diacetates
Tetrahedron, 2005AbstractFor Abstract see ChemInform Abstract in Full Text.
Bhim C. Maiti +2 more
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The regioselective synthesis of aryl pyrroles
Organic & Biomolecular Chemistry, 2006Pyrrole is a unique aromatic molecule as it can readily undergo substitution at all five positions but obtaining the desired regioisomer can prove difficult to control. We now report our results on the regioselective arylation of pyrrole, utilizing selective halogenation and the Suzuki-Miyaura reaction to prepare C4-, C5- and C3-aryl derivatives.
Jason A, Smith +2 more
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Regioselective Radical Aminofluorination of Styrenes
Angewandte Chemie, 2014AbstractThe copper‐catalyzed radical aminofluorination of styrenes with N‐fluorobenzenesulfonimide (NFSI) is realized with high regioselectivity, thus affording aminofluorination products with regioselectivities opposite that of the palladium‐catalyzed and noncatalyzed processes.
Hongwei, Zhang +4 more
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Regioselective 2-Amination of Polychloropyrimidines
Organic Letters, 2016The regioselective amination of substituted di- and trichloropyrimidines affording the 2-substituted products is reported. While aryl- and heteroarylamines require the use of a dialkylbiarylphosphine-derived palladium catalyst for high efficiency, more nucleophilic dialkylamines produce 2-aminopyrimidines under noncatalyzed SNAr conditions.
Sean M, Smith, Stephen L, Buchwald
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