HCID 13343739, compound → HCID 10262853, compound

Participants

Reaction Steps

39.0 g of 5,6,7,8-tetrahydro-5,5,8,8-tetramethyl-2,3-dinitro-naphthalene in 1300 ml of methanol were hydrogenated with Raney-nickel in a 2 l hydrogenation flask. The H2 -uptake after 48 hours was 20.7 l (18.8 l=theory). The catalyst was removed by filtration under suction, the solution was again filtered and the filtrate was evaporated in vacuo. The residue was crystallized from isopropanol. There were obtained 26.2 g (85.5% of theory) of 5,6,7,8-tetrahydro-5,5,8,8-tetramethyl-2,3-naphthalene-diamine of melting point 188°-189° C.

Provenance & Evidence