How is 2-Chloroethyl carbonochloridate (CAS: 627-11-2) typically synthesized?

2-Chloroethyl carbonochloridate (CAS: 627-11-2) is typically synthesized through the chlorination of ethylene carbonate using thionyl chloride. This process involves the reaction of ethylene carbonate with thionyl chloride under anhydrous conditions, yielding 2-chloroethyl carbonochloridate with good selectivity and yield. The reaction is generally carried out in a flask equipped with a condenser and drying tube.