Process for reducing aromatic halodinitro-diols in the...

Details Process for reducing aromatic halodinitro-diols in the... Process for reducing aromatic halodinitro-diols in the...

C - Chemistry, Metallurgy

07

C

C07C 215/80 (2006.01) C07C 209/36 (2006.01) C07C 213/02 (2006.01) C07D 213/73 (2006.01)

Patent

CA 2132542

2132542 9319035 PCTABS00025 An aromatic diamino-diol (such as 4,6-diaminoresorcinol) is made by reducing an aromatic halo-dinitro-diol (such as 2-halo-4,6-dinitroresorcinol) with molecular hydrogen in an aqueous mixture containing a noble metal hydrogenation catalyst, an aqueous solvent and 2 moles of hydrogen halide per mole of aromatic halo-dinitro-diol, plus an additional quantity sufficient to provide a 0.75 to 4 molar solution of the hydrogen halide.

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