Frontiers in Chemistry, 2020 Iron(III)-promoted rapid three-component deuteration of quinoxalinones with olefins and NaBD4 is reported for the first time, which provides a novel, economic, and efficient method for the rapid synthesis of deuterated quinoxalinones.
Wanmei Li +6 more
doaj +1 more source
Frontiers in Chemistry, 2021 A novel and efficient C3-H vinylation reaction with quinoxalin-2(1H)-one as the substrate, in the presence of alkenes, under metal-free conditions, is reported herein.
Rongcai Ding +6 more
doaj +1 more source
Enantioselective Hydrogenations with Chiral Titanocenes
Molecules, 2005 In this review article chiral titanocenes and their application for the enantioselective hydrogenations of different unsaturated compounds are discussed, with a special emphasis on the kinetics and the practicality of the developed systems. The nature of
J. Khinast, A. Panarello, O. Vassylyev
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Analysis of Oleogel Volatile Profile Formation under Ultrasonic Treatment
Gels, 2023 Under certain conditions, ultrasonic treatment of certain foods and ingredients can contribute to the appearance of an extraneous odor, which is not usual for them, especially in fat-containing products.
Yuliya Frolova +2 more
doaj +1 more source
Alternative pathways to α,β-unsaturated ketones via direct oxidative coupling transformation using Sr-doped LaCoO3 perovskite catalyst [PDF]
Royal Society Open Science, 2019 A strontium-doped lanthanum cobaltite perovskite material was prepared, and used as a recyclable and effective heterogeneous catalyst for the direct oxidative coupling of alkenes with aromatic aldehydes to produce α,β-unsaturated ketones.
Khang H. Trinh +7 more
doaj +1 more source
Cobalt-catalyzed nucleophilic addition of the allylic C(sp3)–H bond of simple alkenes to ketones
Beilstein Journal of Organic Chemistry, 2018 We herein describe a cobalt/Xantphos-catalyzed regioselective addition of simple alkenes to acetophenone derivatives, affording branched homoallylic alcohols in high yields with perfect branch selectivities.
Tsuyoshi Mita +3 more
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Relative and Absolute Structure Assignments of Alkenes Using Crystalline Osmate Derivatives for X-Ray Analysis [PDF]
, 2019 Osmium tetroxide and TMEDA form stable crystalline adducts with alkenes. The structure of liquid alkenes can be determined through X-ray analysis of these derivatives. Osmium, a heavy atom, facilitates the crystallographic analysis and the determination
Alexander S., Burns +4 more
core +1 more source
Hydrogenations without Hydrogen: Titania Photocatalyzed Reductions of Maleimides and Aldehydes [PDF]
, 2014 A mild procedure for the reduction of electron-deficient alkenes and carbonyl compounds is described. UVA irradiations of substituted maleimides with dispersions of titania (Aeroxide P25) in methanol/acetonitrile (1:9) solvent under dry anoxic conditions
John C. Walton +10 more
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Allylic C‒H Alkylation of Internal and Terminal Alkenes with Alkenes by Rare-Earth Catalysts [PDF]
Allylic C−H functionalization of simple alkenes presents a step-economical route to access functionalized alkenes. However, current approaches are generally focused on the transformation of α-alkenes, the conversion of internal alkenes was challenging ...
Tao, Mao +6 more
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Intermolecular Heck Coupling with Hindered Alkenes Driven by Carboxylate Directivity [PDF]
, 2018 Pd(0)-catalyzed, non-chain-walking Mizoroki-Heck reactions exhibit poor reactivity with polysubsti- tuted, unbiased alkenes. Intermolecular reactions with simple, all-carbon tetrasubstituted alkenes are unprecedented.
Alexis, Emmerich +3 more
core +1 more source