Photochlorination of phthalic anhydride

Details Photochlorination of phthalic anhydride Photochlorination of phthalic anhydride

C - Chemistry, Metallurgy

07

C

C07C 51/567 (2006.01)

Patent

CA 2059470

CASE 6321 JHE/kmf ABSTRACT PHOTOCHLORINATION OF PHTHALIC ANHYDRIDE Phthalic anhydride may be photochlorinated in the vapor phase to give good yields of 4-chlorophthalic anhydride at temperatures of 250 to 400°C. Optionally, the process can be run to produce di, tri, and tetrachlorophthalic anhydrides.

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