Chlorination of phthalic anhydride

Details Chlorination of phthalic anhydride Chlorination of phthalic anhydride

1980-10-09

1981-10-27

Raymond, Richard

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260465G, C07D30789

Patent

active

042972833

ABSTRACT:
An aromatic compound of the class of phthalic anhydride and ortho-phthalonitrile can be monochlorinated, predominantly in the 4-position, by a vapor phase reaction involving passing chlorine and the aromatic compound through a heated zone maintained at a temperature above 350.degree. C.

REFERENCES:
patent: 1935648 (1933-11-01), Mares
patent: 2028383 (1936-01-01), Dvornikoff
patent: 2429985 (1947-11-01), Blume et al.
patent: 3839401 (1974-10-01), Lavergne et al.
patent: 3855264 (1974-12-01), Watts et al.

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