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benseenide benzenesulfonic acid, and their derivatives and substituted, and n, n '- substituted karbamiidide manufacture process
benseenide benzenesulfonic acid, and their derivatives and substituted, and n, n '- substituted karbamiidide manufacture process
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机译:苯磺酸钠,苯磺酸及其衍生物和取代的,n,n'-取代的氨基甲酰胺的制备方法
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摘要
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-catalysed coupling with an olefine and heterogeneous palladium-catalysed 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 preperation N-benzenesulfon-N'-triazinyl-urea herbicides.
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