Results 1 to 10 of about 6,365 (202)
A heteroditopic macrocycle as organocatalytic nanoreactor for pyrroloacridinone synthesis in water
Beilstein Journal of Organic Chemistry, 2019 A heteroditopic macrocycle is reported as an efficient organocatalytic nanoreactor for the synthesis of diversely functionalized pyrroloacridinones in aqueous medium.
Piyali Sarkar +2 more
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ChemistryOpenIn this study, we describe the synthesis of cinchona (thio)squaramide and a novel cinchona thiourea organocatalyst. These catalysts were employed in pharmaceutically relevant catalytic asymmetric reactions, such as Michael, Friedel–Crafts, and A3 ...
Dr. Sándor Nagy +8 more
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Organocatalyzed Asymmetric α-Oxidation, α-Aminoxylation and α-Amination of Carbonyl Compounds
Molecules, 2010 Organocatalytic asymmetric α-oxidation and amination reactions of carbonyl compounds are highly useful synthetic methodologies, especially in generating chiral building blocks that previously have not been easily accessible by traditional methods.
Worawan Bhanthumnavin, Tirayut Vilaivan
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D-ribose based organo catalyst for the sustainable synthesis of bioactive biscoumarins
Results in ChemistryHerein, the reported work includes the design and synthesis of D-ribose containing DABCO (1,4-diazabicyclo[2.2.2]octane) sugar ionic liquid (DD-RSIL) via three steps and employed an organocatalyst for the synthesis of methylene or methine substituted ...
Pavani Yasam, Rajagopal Desikan
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Living Ring-Opening Polymerization of O-Carboxyanhydrides: The Search for Catalysts
Frontiers in Chemistry, 2018 Biodegradable poly(α-hydroxy acids) can be synthesized by means of ring-opening polymerization (ROP) of O-carboxyanhydrides (OCAs). Numerous catalysts have been developed to control the living polymerization of OCAs.
Yongliang Zhong, Rong Tong
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Membrane-Supported Recovery of Homogeneous Organocatalysts: A Review
Chemistry, 2020 As catalysis plays a significant role in the development of economical and sustainable chemical processes, increased attention is paid to the recovery and reuse of high-value catalysts. Although homogeneous catalysts are usually more active and selective
Péter Kisszékelyi +4 more
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Organocatalytic asymmetric fluorination of α-chloroaldehydes involving kinetic resolution
Beilstein Journal of Organic Chemistry, 2014 In a previous study it was shown that the enantioselective α-fluorination of racemic α-chloroaldehydes with a chiral organocatalyst yielded the corresponding α-chloro-α-fluoroaldehydes with high enantioselectivity.
Kazutaka Shibatomi +5 more
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Recent advances in synthesizing and utilizing nitrogen-containing heterocycles
Frontiers in Chemistry, 2023 The use of organocatalysts and a pot economy has strengthened recent organic syntheses. Synthetic methodologies may be applicable in laboratory preparation or in the industrial production of valuable organic compounds. In most cases, synthetic challenges
Hyun-Joon Ha
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Halogen-Induced Controllable Cyclizations as Diverse Heterocycle Synthetic Strategy
Molecules, 2020 In organic synthesis, due to their high electrophilicity and leaving group properties, halogens play pivotal roles in the activation and structural derivations of organic compounds.
Hideyasu China +3 more
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Molecules, 2012 We describe in this study the asymmetric synthesis of radioisotope (RI)-labeled selective glucocorticoid receptor modulator. This synthesis is based on optimization of the cinchona alkaloid catalyzed addition of 6-bromoindole to ethyl trifluoropyruvate ...
Norie Tsuboya +7 more
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