نتایج جستجو برای: 23 bismethylthio 14 dithiane

تعداد نتایج: 513071  

2009
Hoong-Kun Fun Reza Kia Annada C. Maity Shyamaprosad Goswami

The nitro group in the title compound, C(10)H(11)NO(2)S(2), is almost coplanar with the benzene ring, making a dihedral angle of 3.42 (8)°. The 1,3-dithiane ring adopts a chair conformation. The crystal structure is stabilized by inter-molecular C-H⋯O and C-H⋯π [C⋯Cg = 3.4972 (10) Å] inter-actions.

Journal: :19: Interdisciplinary Studies in the Long Nineteenth Century 2019

Journal: :Acta Crystallographica Section E Structure Reports Online 2009

Journal: :Journal of Sulfur Chemistry 2021

Various 2-substituted-1,3-dithiane oxides (1-oxide and 1,3-dioxide) have been metalated reacted for the first time with a trialkylborane (trioctylborane). The 2-chloro-1,3-dioxide results in migration of an octyl group from boron to carbon displacement chloride gives nonanoic acid after oxidation, but there is no evidence second involving sulfenate group. reaction lithiation 2-methoxy-1-oxide t...

Journal: :Chemical science 2017
Andrea Gualandi Elia Matteucci Filippo Monti Andrea Baschieri Nicola Armaroli Letizia Sambri Pier Giorgio Cozzi

A readily accessible iridium(iii) phenyl-tetrazole complex ([Ir(ptrz)2(tBu-bpy)]+, 2; Hptrz = 2-methyl-5-phenyl-tetrazole; tBu-bpy = 4,4'-di-tert-butyl-2,2'-bipyridine) is shown to be a versatile catalyst for a new photocatalytic Michael reaction. Under light irradiation in the presence of 2, a dithiane 2-carboxylic acid, obtained by simple hydrolysis of a commercially available ethyl ester, ge...

Journal: :Acta Chemica Scandinavica 1959

Journal: :Journal of sulphur chemistry 2008
Roman N Ezhov Vladimir V Rozhkov Janaki R R Majjigapu Andrei G Kutateladze

Novel photolabile amphiphiles containing thioxanthone-based fluorogenic caging groups are developed. Photoinduced fragmentation in dithiane-thioxanthone adducts was demonstrated to occur with 100% quantum efficiency at λ ~ 320 nm and more than 50% at λ ~ 360 nm. A plausible mechanism involves homolytic fission of a carbon-carbon single bond in the excited thioxanthone followed by disproportiona...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2004
Amos B Smith Christopher M Adams Stephanie A Lodise Barbosa Andrew P Degnan

A unified approach for the construction of the potent marine antitumor agents (+)-tedanolide (1) and (+)-13-deoxytedanolide (2) is described. Highlights of the synthetic strategy include the development of a versatile bifunctional dithiane-vinyl iodide linchpin, the unorthodox use of the Evans-Tishchenko reaction, and a late-stage high-risk stereocontrolled introduction of the C(18,19) epoxide ...

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