Results 21 to 30 of about 37,566 (244)
Scientific Reports, 2021 Enzymes with low regioselectivity of substrate reaction sites may produce multiple products from a single substrate. When a target product is produced industrially using these enzymes, the production of non-target products (byproducts) causes adverse ...
Jinzen Ikebe +4 more
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Insights into the Mechanism and Regioselectivity of Palladium-Catalyzed Arylation of α,β-Unsaturated Ketones [PDF]
, 2023 Transition-metal catalyzed coupling reactions of carbonyl compounds using simple chemical feedstocks have become a cornerstone of modern synthetic organic chemistry.
Xiaoxi, Su +3 more
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Highly efficient and enzymatic regioselective undecylenoylation of gastrodin in 2-methyltetrahydrofuran-containing systems. [PDF]
PLoS ONE, 2014 Highly efficient and regioselective acylation of pharmacologically interesting gastrodin with vinyl undecylenic acid has been firstly performed through an enzymatic approach. The highest catalytic activity and regioselectivity towards the acylation of 7'-
Rongling Yang +5 more
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Regioselective conversion of epoxides to β-acetoxy alcohols catalyzed by a novel green and recyclable phase transfer catalyst [PDF]
شیمی کاربردی روز, 2018 A new mild and efficient procedure for the ring opening of epoxides by acetate anion in the presence of catalytic amounts of silica-bound polyethylene glycol substituted 1-methylimidazolium bromide, SiO2-PEG-ImBr, as an effective heterogeneous phase ...
ندا عیاشی +2 more
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Origin of the Anti-Markovnikov Hydroamination of Alkenes Catalyzed by L−Au(I) Complexes: Coordination Mode Determines Regioselectivity [PDF]
, 2019 The reaction mechanism and regioselectivity for the gold(I)-catalyzed hydroamination reaction of terminal alkenes are analyzed by means of density functional theory (DFT) calculations.
Couce-Ríos, A. +3 more
core +3 more sources
, 2023 Many useful transition-metal-catalyzed reactions depend on the migratory insertion of an alkyne into a metal–carbon bond. Steric effects, electronic effects, and coordinating directing groups have all been shown to control product distributions in ...
Logan M. Whitt (14657791) +5 more
core +1 more source
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
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Molecules, 2021 A series of novel 4-(het)arylimidazoldin-2-ones were obtained by the acid-catalyzed reaction of (2,2-diethoxyethyl)ureas with aromatic and heterocyclic C-nucleophiles.
Almir S. Gazizov +10 more
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Molecules, 2017 Conventional frontier molecular orbital theory is not able to satisfactorily explain the regioselectivity outcome of the nitrilimine–alkene cycloaddition.
Giorgio Molteni, Alessandro Ponti
doaj +1 more source
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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