Journal ArticleDOI
Organocatalytic Oxidation. Asymmetric Epoxidation of Olefins Catalyzed by Chiral Ketones and Iminium Salts
O. Andrea Wong,Yian Shi +1 more
TLDR
Ketones with an Attached Chiral Moiety, Chiral Iminium Salt-Catalyzed Epoxidation, and Other Carbohydrate-Based Catalysts 3976 2.8.2.Abstract:
2.6.4. Other Carbohydrate-Based Catalysts 3976 2.7. Carbocyclic Ketones 3977 2.8. Ketones with an Attached Chiral Moiety 3979 3. Chiral Iminium Salt-Catalyzed Epoxidation 3979 3.read more
Citations
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Asymmetric Synthesis of Agrochemically Attractive Trifluoromethylated Dihydroazoles and Related Compounds under Organocatalysis
Hiroyuki Kawai,Norio Shibata +1 more
TL;DR: This account describes the recent progress in the catalytic asymmetric synthesis of a series of trifluoromethylated heterocycles, such as isoxazolines and pyrrolines having a stereogenic carbon center, based on organocatalysis.
Journal ArticleDOI
New reactivity of oxaziridine: Pd(II)-catalyzed aromatic C-H ethoxycarbonylation via C-C bond cleavage.
TL;DR: A novel Pd(II)-catalyzed aromatic C-H ethoxycarbonylation with oxaziridine involving C-C bond cleavage is described, showing that various aromatic 2-phenylpyridines and related compounds as well as aryl ureas can be effectively ethoxy carbonylated.
Journal ArticleDOI
Asymmetric Epoxidation of Fluoroolefins by Chiral Dioxirane. Fluorine Effect on Enantioselectivity
O. Andrea Wong,Yian Shi +1 more
TL;DR: The asymmetric epoxidation of various fluoroolefins has been studied using chiral ketone catalyst, and up to 93% ee was achieved with fructose-derived ketone 1.
Journal ArticleDOI
A highly enantioselective acyl-Mannich reaction of isoquinolines with aldehydes promoted by proline derivatives: an approach to 13-alkyl-tetrahydroprotoberberine alkaloids
TL;DR: In this article, the Hayashi-Jorgensen secondary amine catalyst was used to activate isoquinoline to nucleophilic addition, allowing for the facile generation of useful synthetic intermediates in high enantiomeric excesses.
Journal ArticleDOI
Organocatalytic Oxidation of Organosilanes to Silanols
TL;DR: In this paper, the first organocatalytic synthesis of organosilanes to silanols has been described, without the need for stoichiometric oxidants or precious metal catalytic complexes.
References
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Journal ArticleDOI
Metal-Catalyzed Epoxidations of Alkenes with Hydrogen Peroxide
Benjamin S. Lane,Kevin Burgess +1 more
TL;DR: Metal Oxides Generated in Situ 2461 4.1.
Journal ArticleDOI
Advances in Homogeneous and Heterogeneous Catalytic Asymmetric Epoxidation
TL;DR: This paper presents results of aalysis experiment conducted at the Dalian Institute of Chemical Physics of Chinese Academy of Sciences (Dalian 116023) and Jingmen Technological College (Jingmen 448000) using gas chromatography for the recovery of Na6(CO3) from Na2SO4.
Journal ArticleDOI
Green oxidation with aqueous hydrogen peroxide
TL;DR: Aqueous H2O2 is an ideal oxidant, when coupled with a tungstate complex and a quaternary ammonium hydrogensulfate as an acidic phase-transfer catalyst in an economically, technically, and environmentally satisfying manner.