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Process for producing substituted benzene, benzenesulfonic acid and derivatives thereof, and process for producing N, N'-substituted urea
Process for producing substituted benzene, benzenesulfonic acid and derivatives thereof, and process for producing N, N'-substituted urea
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机译:取代苯,苯磺酸及其衍生物的制备方法以及N,N'-取代的脲的制备方法
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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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