OCOCl3

OCOCl3, also known as oxalyl chloride, is an organic compound with the chemical formula C2O2Cl2. It is a colorless liquid with a pungent odor, commonly used as a reagent in organic synthesis. Oxalyl chloride is a versatile intermediate in the production of various chemicals, including pharmaceuticals, dyes, and polymers. It is typically prepared by the reaction of oxalic acid with thionyl chloride or phosphorus pentachloride. The compound is highly reactive and must be handled with care due to its corrosive nature and potential to release toxic fumes upon contact with water. Oxalyl chloride reacts with alcohols to form esters, with amines to form amides, and with carboxylic acids to form anhydrides. Its reactivity makes it a valuable tool in the synthesis of complex organic molecules. However, its use is regulated due to its hazardous properties, and proper safety measures must be followed when handling this compound.