反应详情

12.7 g of 1,1,3,3-tetramethyl-5,6-dinitro-2-indanone were dissolved in 500 ml of methanol in a hydrogenation flask and hydrogenated with Raney-nickel. After the H2 -uptake of 6.2 l (theory=6.15 l), the catalyst was removed by filtration under suction, the filtrate was again filtered and then evaporated in vacuo. The residue was crystallized from acetonitrile. There were obtained 9.5 g (95.5% of theory) of 5,6-diamino-1,1,3,3-tetramethyl-2-indanone of melting point 179°-180° C.

1. customAfter the H2 -uptake of 6.2 l (theory=6.15 l), the catalyst was removed by filtration under suction
2. filtrationthe filtrate was again filtered
3. customevaporated in vacuo
4. customThe residue was crystallized from acetonitrile