Appeal No. 95-0262
Application 07/924,606
The subject matter on appeal is directed to a process for
the production of 2, 2'-dichlorohydrazobenzene via the catalytic
reduction of o-chloronitrobenzene with hydrogen in a sodium
hydroxide or potassium hydroxide aqueous solution and in the
presence of a platinum catalyst and a quinoid compound co-
catalyst. Importantly, the reduction reaction takes place in the
presence of tetralin . Independent claim 14 is representative of2
the claims on appeal and is reproduced below:
14. A process for the production of
2,2'dichlorohydrazobenzene, which comprises
catalytically reducing o-chloronitrobenzene with
hydrogen in a sodium hydroxide or potassium hydroxide
aqueous solution and tetralin in the presence of
platinum-carbon support catalyst or a palladium-carbon
support catalyst and a quinoid compound cocatalyst
having a basic skeleton formed of 1 to 3 aromatic rings
at a high temperature under a high pressure.
The references of record relied upon by the examiner are:
Werner et al. (Werner) 3,156,724 Nov. 10, 1964
Wollensak 3,931,298 Jan. 06, 1976
Planker et al. (Planker) 4,217,307 Aug. 12, 1980
Herrmann 4,326,078 Apr. 20, 1982
Mestroni EP 0 91 383 Dec. 10, 1983
(European Patent)
2Tetralin® is a registered tradename for 1, 2, 3,4-Tetra-
hydronaphthalene. See The Merck Index, 12th Edition, p 1575,
©1996, copy attached.
2
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