Hydrochloric Acid → Phosgene
Reaction equation
Cl.C1(=O)[O:8][C:5]([Cl:7])([Cl:6])[C:4](Cl)([Cl:9])[O:3]1>>[C:4]([Cl:9])(=[O:3])[C:5]([Cl:6])=[O:8].[C:5]([Cl:7])([Cl:6])=[O:8]Participants
Procedure
Broadly stated, the invention is a process for producing oxalyl chloride comprising: contacting ethylene carbonate with chlorine in a reaction vessel at a temperature in the range of about 70° to 100° C.; continuously circulating the above reaction mixture from the reaction vessel through an illuminated reaction zone of reduced cross-sectional area relative to that of the reaction vessel, and back into the reaction vessel to form tetrachloroethylene carbonate and hydrogen chloride; venting the hydrogen chloride from the reaction vessel; decomposing the tetrachloroethylene carbonate by heating tetrachloroethylene carbonate with a catalytic amount of a tertiary amine or amide to form oxalyl chloride and phosgene gas; and separating the phosgene gas from the oxalyl chloride.
Sources & evidence
- ORD record
- ord-2ba246b6a7b94dce9232c59b6f2ce9bb
- Source dataset
- uspto-grants-1983_06
- Patent number
- US04390708
Reaction notes
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