Vapor phase dechlorination process

Details Vapor phase dechlorination process Vapor phase dechlorination process

1980-02-04

1982-07-27

Breitenstein, G. T.

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

Organic compounds

Carboxylic acid esters

560 21, C07C 6978

Patent

active

043418996

ABSTRACT:
This invention provides a selective dechlorination process that comprises contacting a vaporized mixture of methyl 2,5-dichlorobenzoate and hydrogen, in a molar ratio respectively of 1:3-4, optionally together with between about 1% and about 10% of methanol by weight of methyl 2,5-dichlorobenzoate with a nickel catalyst at a temperature between about 200.degree. C. and about 300.degree. C. and for a residence time of between about 2.0 seconds and about 5.0 seconds.

REFERENCES:
Elles, Hydrogenation of Organic Substances, D. Van Nostrand Co., Inc., N.Y., 3rd Edition, p. 113, (1930).
Rose, The Condensed Chemical Dictionary, 5th Ed., Reinhold Publishing Co., N.Y., p. 357, (1956).
Weygand, Preparative Organic Chemistry, pp. 65-66, (1972).

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