[1,1'-Biphenyl]-4-amine, 3-nitro- → (1,1'-Biphenyl)-3,4-diamine

Participants

Reaction Steps

To a suspension of 2 g (9.3 mmol) of the product obtained in Example 22 in 20 ml of methanol were slowly added 0.2 g of palladium on carbon and 0.7 g of NaBH4. After the addition of NaBH4 had ended, the reaction was already complete. The reaction mixture was filtered through shell lime and washed with ethyl acetate, and the solvent was removed under reduced pressure. This gave 1.3 g (77%).

Provenance & Evidence