Process

A process for the production of a fluorescent whitening agent of formula: in which X and Z are as defined herein, comprising A) rearranging a hydrazobenzene compound having the formula: in which Z is as defined herein, to produce in situ a compound having the formula: B) diazotising the compound of...

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Bibliographic Details
Main Authors KANERT; WERNER, INDOLESE; ADRIANO, SCHNYDER; ANITA, ELIU; VICTOR, WYSER; PHILIPP
Format Patent
LanguageEnglish
Published 29.02.2000
Edition7
Subjects
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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Summary:A process for the production of a fluorescent whitening agent of formula: in which X and Z are as defined herein, comprising A) rearranging a hydrazobenzene compound having the formula: in which Z is as defined herein, to produce in situ a compound having the formula: B) diazotising the compound of formula (3) to produce a compound having the formula: in which Z has its previous significance and G1 is a counter ion; and C) reacting the compound of formula (4) with 2 moles of a compound having the formula: in which X and n have their previous significance, in the presence of an inorganic or organic palladium salt, or a mixture thereof, as catalyst-precursor, to produce a compound having the formula (1).
Bibliography:Application Number: US19980065269