Results 81 to 90 of about 45,362 (276)
Beilstein Journal of Organic Chemistry, 2020 The first example of the cycloaddition of in situ-generated azomethine imine under microwave conditions is described. The reaction of 6-aryl-1,5-diazabicyclo[3.1.0]hexanes with 1,3-diphenylprop-2-en-1-ones proceeds regio- and stereoselectively giving ...
Alexander P. Molchanov +3 more
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Front Cover: 2′/3′ Regioselectivity of Enzyme‐Free Copying of RNA Detected by NMR (ChemBioChem 14/2020) [PDF]
, 2020 Sebastian Motsch +2 more
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Beilstein Journal of Organic Chemistry, 2015 Secondary phosphine oxides react with vinyl sulfides (both alkyl- and aryl-substituted sulfides) under aerobic and solvent-free conditions (80 °C, air, 7–30 h) to afford 1-hydroxy-2-(organosulfanyl)ethyl(diorganyl)phosphine oxides in 70–93% yields.
Svetlana F. Malysheva +6 more
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Study on the Alkylation Reactions of N(7)-Unsubstituted 1,3-Diazaoxindoles
Molecules, 2017 The chemistry of the 5,7-dihydro-6H-pyrrolo[2,3-d]pyrimidin-6-one (1,3-diazaoxindole) compound family, possessing a drug-like scaffold, is unexplored. In this study, the alkylation reactions of N(7)-unsubstituted 5-isopropyl-1,3-diazaoxindoles bearing ...
Eszter Kókai +5 more
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Chemoselective or Regioselective?
ChemistryEuropeOver the past two decades, there has been a notable increase in the number of reactions that have been classified as chemoselective and/or regioselective. It is somewhat surprising that neither of these terms is clearly defined, as this often leads to conflicting and confusing designations and makes it challenging to report the results coherently. This
Andrej Kolarovič, Pavol Jakubec
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Regioselective One‐Step Cyclization and Aromatization towards Directly Amino‐Functionalized Covalent Organic Framework with Stable Benzodiimidazole Linkage [PDF]
, 2023 Xiaofeng Li +9 more
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An Exploratory Study of the Enzymatic Hydroxycinnamoylation of Sucrose and Its Derivatives
MoleculesPhenylpropanoid sucrose esters are a large and important group of natural substances with significant therapeutic potential. This work describes a pilot study of the enzymatic hydroxycinnamoylation of sucrose and its derivatives which was carried out ...
Matej Cvečko +2 more
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Green Polymer Chemistry: Enzyme Catalysis for Polymer Functionalization
Molecules, 2015 Enzyme catalyzed reactions are green alternative approaches to functionalize polymers compared to conventional methods. This technique is especially advantageous due to the high selectivity, high efficiency, milder reaction conditions, and recyclability ...
Sanghamitra Sen, Judit E. Puskas
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Regioselective Arylboration of 1,3‐Butadiene
Israel Journal of Chemistry, 2019 AbstractA method for the regioselective 1,2‐arylboration of 1,3‐butadiene, a feedstock chemical, is reported. The reactions result in the formation of products that can be easily elaborated to other structures. The mechanistic details of this process are also discussed.
Allison M. Bergmann +3 more
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Regioselective Substitution of BINOL
Chemical Reviews1,1'-Bi-2-naphthol (BINOL) has been extensively used as the chirality source in the fields of molecular recognition, asymmetric synthesis, and materials science. The direct electrophilic substitution at the aromatic rings of the optically active BINOL has been developed as one of the most convenient strategies to structurally modify BINOL for diverse ...
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