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
More filters
Synthesis of Marine Polycyclic Polyethers via Endo-Selective Epoxide-Opening Cascades
TL;DR: The proposed biosynthetic pathways to ladder polyethers of polyketide origin and oxasqualenoids of terpenoid origin share a dramatic epoxide-opening cascade as a key step as discussed by the authors.
Journal ArticleDOI
Efficient photocatalytic oxygenation of alkenes by water soluble sensitizer in organic–water biphasic media
Mahdi Hajimohammadi,Hoda Ghasemi +1 more
TL;DR: A green, environmentally and economically photooxygenation of olefins by molecular oxygen in the presence of 4-carboxyl tetra phenyl porphyrin (H2TCPP), Rose Bengal (RB), Methylene Blue (MB) and some metallosensitizers (MS) such as cobalt phthalocyaninesulfonate (Coph(SO3H)4), MnTCPPCl, FeTCPPCL and SbTPP(OH)2 as water-soluble sensitizers in organic-water biphas
Journal ArticleDOI
Organocatalytic Oxidation. Asymmetric Epoxidation of Olefins Catalyzed by Chiral Ketones and Iminium Salts
O. Andrea Wong,Yian Shi +1 more
Journal ArticleDOI
Enantioselective Synthesis of Spiro-oxiranes: An Asymmetric Addition/Aldol/Spirocyclization Domino Cascade.
TL;DR: In this paper, enantioenriched spiro-oxiranes bearing three contiguous stereocenters were synthesized using a rhodium-catalyzed asymmetric addition/aldol/spirocyclization sequence.
Journal ArticleDOI
SO2F2-Mediated Epoxidation of Olefins with Hydrogen Peroxide.
TL;DR: The novel SO2F2/H2O2/K2CO3 epoxidizing system is suitable to a variety of olefinic substrates including electron-rich and electron-deficient ones.
References
More filters
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.