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Alcohols chromium dioxide

Oxidation of alcohols. Chromium dioxide is a mild oxidant for various alcohols. It... [Pg.114]

Scheme 2.3 Oxidation of primary and secondary alcohols with chromium dioxide. Scheme 2.3 Oxidation of primary and secondary alcohols with chromium dioxide.
Chromium is highly acid-resistant and is only attacked by hydrochloric, hydrofluoric, and sulfuric acids. It is also resistant to other common corroding agents including acetone, alcohols, ammonia, carbon dioxide, carbon disulfide, foodstuffs, petroleum products, phenols, sodium hydroxide, and sulfur dioxide. [Pg.113]

Nitrobenzaldehyde has been prepared from />-nitrotoluene by treatment with isoamyl nitrite in the presence of sodium methylate,1 by oxidation with chromyl chloride,2 cerium dioxide,3 or chromium trioxide in the presence of acetic anhydride.4 It can also be prepared by the oxidation of -nitrobenzyl chloride,5 7>-nitrobenzyl alcohol,6 or the esters of -nitrocinnamic acid.7... [Pg.63]

Chromium pentaphenyl hydrogen carbonate,2 (C6H5)5Cr.HC03. 3H20, is formed when a methyl alcohol solution of the base is saturated with carbon dioxide. The crystals are orange-red and melt at 120° C. in a bath previously heated to 100° C. By suitably drying the product mono- and di-hydrates are isolated. The crystals are readily soluble in alcohols, sparingly soluble in water, insoluble in ether or benzene. [Pg.263]

Chromium tetraphenyl hydrogen carbonate, (C6H5)4Cr.HC03. 2HaO.—An aqueous solution of the tetraphenyl base is saturated with carbon dioxide and concentrated over sulphuric acid in vacuo. The residue is treated with alcohol and the product precipitated by ether. Orange crystals separate, M.pt. 110° to 1110 C., prolonged desiccation over phosphorus pentoxide causing decomposition and formation of diphenyl. [Pg.266]

The chromium oxapropadienylidene complex affords dimethyl malonate when oxidized in methanol (77), and the diester is assumed to be produced by addition of the alcohol to the first-formed tricarbon dioxide ... [Pg.114]

See other pages where Alcohols chromium dioxide is mentioned: [Pg.23]    [Pg.460]    [Pg.29]    [Pg.79]    [Pg.269]    [Pg.309]    [Pg.869]    [Pg.872]    [Pg.1034]    [Pg.281]    [Pg.321]    [Pg.383]    [Pg.383]    [Pg.582]    [Pg.628]    [Pg.655]    [Pg.976]    [Pg.980]    [Pg.981]    [Pg.985]    [Pg.1178]    [Pg.1183]    [Pg.667]    [Pg.223]    [Pg.448]    [Pg.87]    [Pg.216]    [Pg.45]    [Pg.119]    [Pg.218]    [Pg.7]    [Pg.37]    [Pg.354]    [Pg.61]    [Pg.145]    [Pg.380]    [Pg.119]    [Pg.106]    [Pg.514]    [Pg.695]    [Pg.794]    [Pg.141]    [Pg.275]   
See also in sourсe #XX -- [ Pg.1068 ]



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Chromium dioxide, oxidation alcohols

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