Proton-Electron Hyperfine Coupling Constants of the Chlorophyll a Cation Radical by ENDOR Spectroscopy [PDF]
, 1977 In this paper we describe the assignment of the major coupling constants in monomer chlorophyll a cation free radical by ENDOR spectroscopy. To facilitate chemical manipulation methylpyrochlorophyllide a has been used as a stand-in, and a suite of six ...
Katz, J. J., Norris, J. R., Scheer, Hugo
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Synthesis and Evaluation of Thiochroman-4-One Derivatives as Potential Leishmanicidal Agents
Molecules, 2017 The S-containing heterocyclic compounds benzothiopyrans or thiochromones stand out as having promising biological activities due to their structural relationship with chromones (benzopyrans), which are widely known as privileged scaffolds in medicinal ...
Esteban Vargas +4 more
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Beilstein Journal of Organic Chemistry, 2021 The reported flow-batch approach enables the easy preparation of 2H-azirines and their stereoselective transformation into highly functionalized NH-aziridines, starting from vinyl azides and organolithium compounds.
Michael Andresini +2 more
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Журнал органічної та фармацевтичної хімії, 2020 Aim. To study the synthetic potential of cyclization of N-(β-polyfluoroacyl)vinyl derivatives of proline and N-substituted glycines into polyfluoroalkyl pyrroles, which are useful intermediates to fluorinated pyrrolidine alkaloids.
Anton A. Klipkov +3 more
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Polymerization of Vinyl Compounds by the Sodium-adducts of Heterocyclic Vinyl Compounds
Nippon kagaku zassi, 1960 側鎖にビニル基をもった複素環式化合物すなわちビニルピリジン,ビニルフラン,ビニルチオフェン等の金属ナトリウムとの付加化合物の合成を行ない,これらの付加化合物による数種のビニル化合物の重合反応を試みた結果,いずれの付加化合物も求電子的官能基をもつビニル化合物に対してはいちじるしい重合触媒活性を有するが,求核的官能基をもつビニル化合物に対しては共役系ビニル化合物についてのみ触煤活性が認められ,しかもこの触媒活性は付加化合物の種類によって異なることが認められた。一方付加化合物の電子スピン共鳴吸収,近紫外部吸収スペクトルの測定結果から推定される付加化合物の構造はラジカルアニオンであるが,低温では付加化合物からビニル化合物への電子移動によるアニオン重合が支配的であると考えると ...
Keiji KUWATA +2 more
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Fire Retardancy of Vinyl Ester Nanocomposites: Synergy with Phosphorus-Based Fire Retardants [PDF]
, 2005 Vinyl ester (PVE) nanocomposites were prepared using both clay and polyhedral oligosilsesquioxanes (POSS) as the nano-dimensional material. From cone calorimetric data, it was shown that both POSS and clay affect the flammability of the nanocomposites to
Chigwada, Grace +3 more
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Understanding the aqueous phase ozonolysis of isoprene: distinct product distribution and mechanism from the gas phase reaction [PDF]
, 2012 The aqueous phase reaction of volatile organic compounds (VOCs) has not been considered in most analyses of atmospheric chemical processes. However, some experimental evidence has shown that, compared to the corresponding gas phase reaction, the aqueous ...
Chen, Z. M. +4 more
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The diastereoselective Meth-Cohn epoxidation of camphor-derived vinyl sulfones [PDF]
, 2012 Some camphor-derived vinyl sulfones bearing oxygen functionality at the allylic position have been synthesized and their nucleophilic epoxidation reactions under Meth-Cohn conditions have been explored.
Adam +91 more
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Vinyl‐ and Arylnitrogen Compounds
ChemInform, 2005 AbstractFor Abstract see ChemInform Abstract in Full Text.
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Recent Advances in the Synthetic and Mechanistic Aspects of the Ruthenium-catalyzed Carbon-heteroatom Bond Forming Reactions of Alkenes and Alkynes [PDF]
, 2011 The group’s recent advances in catalytic carbon-to-heteroatom bond forming reactions of alkenes and alkynes are described. For the C–O bond formation reaction, a well-defined bifunctional ruthenium-amido catalyst has been successfully employed for the ...
Yi, Chae S.
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