Chromyl chloride, reaction+hydrocarbons

Reaction XC1. (a) Oxidation of Aromatic Hydrocarbons to Aldehydes by the action of Chromyl Chloride in Carbon Disulphide Solution. (Etard.) (A. Ch., [5], 22, 225.)—In this reaction the hydrocarbon and chromyl-chloride are both dissolved in carbon disulphide, and the solutions carefully mixed. An explosive intermediate compound is precipitated, and this is separated and decomposed with water to give the aldehyde. The yields are very good, but the method is not often used owing to the inconvenience of working with carbon disulphide and the dangerous nature of the intermediate compounds. 

This reaction was initially reported by Etard in 1880. It is the oxidation of hydrocarbons by hexavalent chromium compounds (chromyl chloride, i.e., chromatic acid chloride) to form a mixture of alcohol, carbonyl compounds (aldehyde or ketones), chloro-ketones, or aldehydes and the starting material. Therefore, this reaction is generally known as the Etard... 

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