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- W775362078 abstract "2,2'-Dichlorohydroazobenzene was prepared by selective hydrogenation of o-nitrochlorobenzene with hydrogen in the presence of 0.8% and 5% Pd/C catalyst. O-Chloroaniline was a minor product in the catalytic hydrogenation of o-nitrochlorobenzene. The effects of base, Pd/C catalyst, and co-catalyst were discussed on catalytic hydrogenation. 2,2'-Dichlorohydroazobenzene, as an intermediate, was rearranged to 3,3'-dichlorobenzidine after reacting with HCl. It was shown that selectivity of catalytic hydrogenation of o-nitro-chlorobenzene is affected strongly by concentration of base, Pd/C catalyst, and co-catalyst. <TEX>$^1Hand^{13}C$</TEX>NMR spectroscopy confirmed the chemical structures of 2,2'-dichlorohydrazobenzene and 3,3'-dichlorobenzidine." @default.
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- W775362078 date "2002-12-20" @default.
- W775362078 modified "2023-10-03" @default.
- W775362078 title "Cataytic Hydrogenation of o-Nitrochlorbenzene to 3,3'-Dichlorobenzidine" @default.
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- W775362078 doi "https://doi.org/10.5012/bkcs.2002.23.12.1785" @default.
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