Results 31 to 40 of about 2,987 (182)
Molecules, 2013 An efficient approach for the synthesis of 3-substituted-3-hydroxy-2-oxindoles has been achieved via an aldol reaction of α,β-unsaturated ketones and isatins using arginine as an organocatalyst.
Tingting Yan +4 more
doaj +1 more source
Mechanochemistry Meets Catalysis: Metal Complexes for Greener Organic Transformations
Angewandte Chemie, EarlyView.Mechanochemistry is redefining metal catalysis by controlling catalyst formulation, speciation, and deployment. This Review shows how milling, LAG, RAM, and TSE enable rapid metal‐complex assembly, distinctive catalytic manifolds, and scalable synthesis beyond solution chemistry.
Sourav Behera +2 more
wiley +2 more sources
Molecules, 2020 New D-π-A configured organic sensitizers featuring halogen-substituted oxindole-bridged acceptor units have been synthesized for dye-sensitized solar cells applications.
Yogesh S. Tingare +5 more
doaj +1 more source
Frontiers in Chemistry, 2022 A short and efficient multicomponent sequence for synthesizing fused novel polyheterocyclic chromeno spiro-pyrrolidine oxindoles via 1,3-dipolar cycloaddition reaction mediated by reactive azomethine ylides catalyzed by the Graphene Oxide (GO) is ...
Vipin Singh +2 more
doaj +1 more source
Angewandte Chemie, EarlyView.An efficient, enantiodivergent synthesis of phosphorylated oxindoles with quaternary stereocenters is achieved via a nickel‐catalyzed intermolecular Heck‐phosphorylation cascade. Employing a single chiral catalyst, either product enantiomer is selectively accessed simply by changing the alkene leaving group. DFT calculations trace this stereodivergence
Haimeng Zhu +4 more
wiley +2 more sources
Molecules, 2012 The enantioselective conjugate addition reaction of 3-aryl-substituted oxindoles with methyl vinyl ketone promoted by binaphthyl-modified bifunctional organocatalysts was investigated.
Saet Byeol Woo +2 more
doaj +1 more source
Molecules, 2011 An efficient synthesis of functionalized spiropyrrolizidine oxindoles via a three-component tandem cycloaddition has been achieved. This strategy can provide direct and rapid access to spiropyrrolizidine oxindoles in high yields (up to 99%) with ...
Tai-Ran Kang +5 more
doaj +1 more source
Molecules, 2018 Alkylidene oxindoles are important functional moieties and building blocks in pharmaceutical and synthetic chemistry. Our interest in biologically active compounds focused our studies on the synthesis of novel oxindoles, bearing on the exocyclic double ...
Boris Letribot +7 more
doaj +1 more source
Chemical and Pharmaceutical Bulletin, 1969 The thiation of methyl substituted oxindoles (I) with phosphorous pentasulfide gave the corresponding 2-indolinethiones (II). The 2-indolinethione (II) having more than one hydrogen at 3-position, however, were sensitive towards phosphorous pentasulfide to produce the indolic compounds such as III, IV, V and VI.
HINO, TOHRU +3 more
openaire +2 more sources