Process for 4-chlorobenzotrichloride

Details Process for 4-chlorobenzotrichloride Process for 4-chlorobenzotrichloride

1991-09-24

1992-10-20

Cintins, Marianne M.

Organic compounds -- part of the class 532-570 series

Organic compounds

Halogen containing

570191, 570197, 570207, 570208, 20415797, C07C 1722, C07C 1714

Patent

active

051571730

ABSTRACT:
4-chlorobenzotrichloride was prepared by the chlorination of p-xylene in the vapor phase at a temperature above about 200.degree. C. in the presence of an activated carbon catalyst and water. An approximately 75 percent calculated yield was obtained at 250.degree. C. using a wide-pore activated carbon catalyst.

REFERENCES:
patent: 3350467 (1967-10-01), Lasco et al.
patent: 3683029 (1972-08-01), Dorrentos
patent: 3836445 (1974-09-01), Sano et al.
patent: 3928478 (1975-12-01), Johnson
patent: 3952065 (1976-04-01), Mrva et al.
Organic Chemistry, 4th Ed.; R. T. Morrison & R. N. Boyd; 1983, pp. 640-643.
Activated Carbon; J. W. Hassler; 1974, pp. 248-273 & 341-354.
Chlorine; J. S. Sconce, Editor-in-Chief; 1962, pp. 21-45 by E. J. Laubusch pp. 834-863 by P. E. Hoch.
Kirk-Othmer Encyclopedia of Chemical Technology, Third Ed., vol. 5, pp. 819-822, 825, 828, 831-832, and 834-836.
Jinichiro et al., "Chlorination of Aromatic Compound at Side Chains", Chemical Abstracts, vol. 89,89:215045s, 1978, p. 560.

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