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Selenium Dioxide SeO

Selenium dioxide, SeO, is ery poisonous (cf. p. I47), but is valuable particu larly for the oxidation of methylene ( CHs) groups to carbonyl ( CO) groups. [Pg.146]

Selenium burns with a blue flame that produces selenium dioxide (SeO ). Selenium will react with most metals as well as with nonmetals, including the elements in the halogen group... [Pg.238]

Selenium dioxide (SeO ) is used as an oxidizing agent, as a catalyst, and as an antioxidant for lubricating oils and grease. [Pg.238]

Selenium dioxide (= SeO. ) (Fabaceae) spp. Selenium accumulator plants — Reacts with thiols e.g. GSH — ... [Pg.632]

Niacin (also known as vitamin B ) and other oxygenated products of picolines, pyrimidines, quinolines, and pyrazines are of considerable value in pharmaceutical, agrochemical, and fine-chemical applications. Most these intermediates are usually produced using environmentally aggressive oxidizing agents such as chromic acid, permanganates, selenium dioxide (SeO ), and BnO +O and may involve two (or more) separate steps. [Pg.460]

A related approach is the construction of a new carbonyl group next to the old. Such reactions occur via enols and are unambiguous only if enolisation is so too. Selenium dioxide (SeO ) converts ketones directly to a-diketones (31), whilst nitrosation gives (32) which is in tautomeric equilibrium with oxime (33). Hydrolysis gives the same a-diketone (31). [Pg.197]

In the smelting of ores of metals such as copper and lead, sulfur dioxide (SO ) is produced. Because small amounts of selenium are mixed in with the sulfur, small amounts of selenium dioxide (SeO )... [Pg.159]

Hydrogen peroxide in presence of tungsten oxide (WO3) or selenium dioxide (SeO ) react with alkene to give anti-dihydroxylation products (Scheme 73). [Pg.138]

Finally, acid-catalyzed enolization of aldehydes and ketones in the presence of selenium dioxide (SeO ) also results in oxidation a- to those carbonyl functionalities via the corresponding enol. As shown in Scheme 8.14, the reaction of the enol with Se02 followed by the loss of selenium(II) oxide (which subsequently... [Pg.599]

See other pages where Selenium Dioxide SeO is mentioned: [Pg.281]    [Pg.70]    [Pg.736]    [Pg.771]    [Pg.68]    [Pg.728]    [Pg.763]    [Pg.46]    [Pg.166]    [Pg.454]    [Pg.487]    [Pg.70]    [Pg.712]    [Pg.745]    [Pg.48]    [Pg.378]    [Pg.859]    [Pg.360]    [Pg.774]    [Pg.809]    [Pg.306]    [Pg.808]    [Pg.857]    [Pg.68]    [Pg.728]    [Pg.762]    [Pg.327]    [Pg.526]   


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Selenium dioxide

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