PROCESS FOR THE PREPARATION OF ARYLHYDROXYLAMINES

PROCESS FOR THE PREPARATION OF ARYLHYDROXYLAMINES of the Invention A process for producing arylhydroxylamines in high yield with minimal formation of by-product arylamines. A charge mixture is prepared comprising a nitroaryl compound, a platinum catalyst, a base, a sulfur compound, and a solvent for...

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Hauptverfasser:	CHAPMAN, DOUGLAS W, CASKEY, DOUGLAS C
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	ACYCLIC OR CARBOCYCLIC COMPOUNDS APPARATUS THEREFOR CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY GENERAL METHODS OF ORGANIC CHEMISTRY METALLURGY ORGANIC CHEMISTRY PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL THEIR RELEVANT APPARATUS TRANSPORTING
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Beschreibung
Zusammenfassung:	PROCESS FOR THE PREPARATION OF ARYLHYDROXYLAMINES of the Invention A process for producing arylhydroxylamines in high yield with minimal formation of by-product arylamines. A charge mixture is prepared comprising a nitroaryl compound, a platinum catalyst, a base, a sulfur compound, and a solvent for the nitroaryl compound. The sulfur compound is one in which divalent sulfur is bonded to two other moieties or a compound reducible to such divalent sulfur compound under catalytic hydrogenation conditions. Hydrogen is introduced into the mixture while the mixture is agitated at a temperature in a range of 0-40.degree.C thereby reducing the nitro group of the nitroaryl compound to the hydroxylamine group.