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Lead, sulfur, oxygen system

Pavlov, D. Rogachev, T. (1986) Mechanism of the action of silver and arsenic on the anodic corrosion of lead and oxygen evolution at the lead/lead oxide (PbOj J/water/oxygen/sulfuric acid electrode system. Electrochim. Acta., 31(2), 241-249. [Pg.569]

The equivalence of sulfur and oxygen in this ring system carries over to NSAIDs as well. Preparation of the sulfur analogue of isoxepac (6-4) starts with the alkylation of thiophenol (27-1) with benzyl chloride (26-1). Cyclization of the intermediate thioether (27-2) then affords the homothioxanthone (27-3). The carboxyl side chain is then extended by means of the Amdt-Eistert homologation reaction. The acid is thus hrst converted to its acid chloride by means of thionyl chloride. Reaction with excess diazomethane leads to the diazoketone (27-4). Treatment of that intermediate with silver benzoate and triethylamine leads the ketone to rearrange to an acetic acid. There is thus obtained tiopinac (27-5) [28]. [Pg.530]

See other pages where Lead, sulfur, oxygen system is mentioned: [Pg.251]    [Pg.676]    [Pg.471]    [Pg.471]    [Pg.45]    [Pg.240]    [Pg.45]    [Pg.249]    [Pg.676]    [Pg.388]    [Pg.44]    [Pg.118]    [Pg.536]    [Pg.199]    [Pg.115]    [Pg.216]    [Pg.68]    [Pg.459]    [Pg.79]    [Pg.529]    [Pg.292]    [Pg.254]    [Pg.424]    [Pg.778]    [Pg.386]    [Pg.21]    [Pg.35]    [Pg.47]    [Pg.429]    [Pg.196]    [Pg.66]    [Pg.238]    [Pg.359]    [Pg.918]    [Pg.555]    [Pg.474]    [Pg.618]    [Pg.166]    [Pg.63]    [Pg.82]    [Pg.622]    [Pg.216]    [Pg.31]    [Pg.1355]    [Pg.107]    [Pg.104]    [Pg.398]   
See also in sourсe #XX -- [ Pg.101 ]



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Oxygen sulfur

Oxygen systems

Sulfur system

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