Oxalyl chloride is a chemical compound with the formula (COCl)2. This colourless, sharp-smelling liquid, the diacid chloride of oxalic acid, is a useful reagent in organic synthesis. It can be prepared by treating oxalic acid with phosphorus pentachloride
O 1386 (OTTO) Oxalyl chloride, 98% Cas 79-37-8 - used as a catalyst in the oxidation of alcohols to the corresponding aldehydes and ketones. It is actively used for the synthesis of acid chlorides from acids. In the Fridel-Crafts acylation reaction, it reacts with aromatic compounds to get the corresponding acyl choride using aluminum chloride as catalyst. Further, it is utilized to prepare dioxane tetrketone, an oxide of carbon.