Results 11 to 20 of about 48,499 (273)
Regioselective Monoborylation of Spirocyclobutenes
Organic Letters, 2021 We present a strategy for the synthesis of spirocyclic cyclobutanes with modulable exit vectors based on the regioselective monoborylation of spirocyclobutenes. Using an inexpensive copper salt and a commercially available bidentate phosphine, a broad variety of borylated spirocycles have been prepared with complete regiocontrol.
Luis Nóvoa +4 more
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Regioselective Oxyselenenylation [PDF]
Chemistry Letters, 1987 Abstract The regioselective oxyselenenylation of terminal olefins or cycloalkenes was achieved via olefin oxymercuration and subsequent radical substitution by selenenylating reagent such as S-benzoyl Se-phenyl selenosulfide, diphenyl diselenide, or phenylselenocyanide.
Takeshi Toru +3 more
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Highly Regioselective Friedländer Reaction [PDF]
Organic Letters, 2001 [reaction: see text]. A highly regioselective Friedländer reaction is described. By introduction of a phosphonate group at one of the alpha-carbons of a ketone, regioselectivity can be perfectly controlled.
Y, Hsiao +4 more
openaire +2 more sources
Predicting Flavonoid UGT Regioselectivity [PDF]
Advances in Bioinformatics, 2011 Machine learning was applied to a challenging and biologically significant protein classification problem: the prediction of avonoid UGT acceptor regioselectivity from primary sequence. Novel indices characterizing graphical models of residues were proposed and found to be widely distributed among existing amino acid indices and to cluster residues ...
Jackson, Rhydon +3 more
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An efficient synthesis of novel triazoles incorporating barbituric motifs via [3+2] cycloaddition reaction: An experimental and theoretical study [PDF]
Journal of the Serbian Chemical Society, 2018 In this work, the synthesis of novel triazole derivatives with barbituric motifs in good yields is described. The alkyne was prepared through the Knoevenagel reaction of barbituric derivatives with ortho and para O-propargylated hydroxybenzaldehyde.
Darroudi Mahdieh +2 more
doaj +1 more source
Model Building of Metal Oxide Surfaces and Vibronic Coupling Density as a Reactivity Index: Regioselectivity of CO$_2$ Adsorption on Ag-loaded Ga$_2$O$_3$ [PDF]
, 2018 The step-by-step hydrogen-terminated (SSHT) model is proposed as a model for the surfaces of metal oxides. Using this model, it is found that the vibronic coupling density (VCD) can be employed as a reactivity index for surface reactions.
Hosokawa, Saburo +5 more
core +2 more sources
Beilstein Journal of Organic Chemistry, 2011 The regioselectivity and the photochemical efficiency were investigated in the Paternò–Büchi reaction of 1,3-dimethylthymine (DMT) and 1,3-dimethyluracil (DMU) with benzophenone (1b) and some 4,4’-disubstituted derivatives (dimethoxy (1a), difluoro (1c),
Feng-Feng Kong +2 more
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The intermolecular hydro-oxycarbonylation of internal alkynes: current state of the art [PDF]
, 2018 The authors acknowledge the Spanish MINECO (projects CTQ2013-40591-P and CTQ2016-75986-P) and the Gobierno del Principado de Asturias (project GRUPIN14-006) for financial support. J. F.
Cadierno Menéndez, Victorio +3 more
core +2 more sources
Molecules, 2021 Five protocols were first compared for the copper-catalyzed C-N bond formation between 7-azaindole and aryl/heteroaryl iodides/bromides. The 1-arylated 7-azaindoles thus obtained were subjected to deprotometalation-iodolysis sequences using lithium 2,2,6,
Mohamed Yacine Ameur Messaoud +9 more
doaj +1 more source
Computational study of the hydrodefluorination of fluoroarenes at [Ru(NHC)(PR3)2(CO)(H)2]: predicted scope and regioselectivities [PDF]
, 2013 Density functional theory calculations have been employed to investigate the scope and selectivity of the hydrodefluorination (HDF) of fluoroarenes, C6F6-nHn (n = 0-5), at catalysts of the type [Ru(NHC)(PR3)(2)(CO)(H)(2)].
Macgregor, Stuart Alan +3 more
core +1 more source