Organic compounds -- part of the class 532-570 series – Organic compounds – Sulfonic acids or salts thereof
Patent
1995-06-05
1997-06-10
Nazario-Gonzalez, Porfirio
Organic compounds -- part of the class 532-570 series
Organic compounds
Sulfonic acids or salts thereof
564 90, C07C30332, C07C30930, C07C31116
Patent
active
056377630
ABSTRACT:
A process for the preparation of substituted benzenes or benzenesulfonic acid and its derivatives comprising diazotisation of an aminobenzene or ortho-amino-benzenesulfonic acid derivative followed by homogeneous palladium-catalyzed coupling with an olefine and heterogeneous palladium-catalyzed hydrogenation of the olefinic substituent, wherein the homogeneous catalyst is reduced and precipitated as metal after the coupling in the reaction mixture and used as a heterogeneous palladium catalyst for the hydrogenation step. The process is particular suitable for the preparation N-benzenesulfon-N'-triazinyl-urea herbicides.
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Baumeister Peter
Seifert Gottfried
Steiner Heinz
Ciba-Geigy Corporation
Frazier Barbara S.
Mathias Marla J.
Nazario-Gonzalez Porfirio
Teoli, Jr. William A.
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