sodium thiosulfite anhydrous → N*1*-Benzyl-3-benzyloxy-benzene-1,2-diamine

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A solution of benzyl-(3-benzyloxy-2-nitro-phenyl)-amine (8.116 g, 24.3 mmol) in 500 mL ethanol was added to a solution of sodium thiosulfite (29.0 g, 162.8 g.) in 350 mL water at 100° C. while stirring. The reaction mixture was heated for 30 minutes at this temperature, and then cooled and concentrated in vacuo. The off-white solid which precipitates was filtered and dried overnight under a stream of nitrogen to give 6.77 g (22.24 mmol, 91.5%) of N*1*-Benzyl-3-benzyloxy-benzene-1,2-diamine. MS: 305 (M+H)+.

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