HCID 69074084, compound → HCID 69065503, compound

Participants

Reaction Steps

To a solution of 3,3-diethyl-1-isopropyl-5-nitro-1,3-dihydro-indol-2-one (12.6 g, 45.60 mmol) in methanol/tetrahydrofuran (THF) (1:1, 80 ml) palladium on charcoal (10%, 1.2 g) was added and the mixture hydrogenated at room temperature for 4 h. After filtration of the catalyst the solvent was evaporated and the residue triturated with iso-hexane to yield 9.7 g 5-amino-3,3-diethyl-1-isopropyl-1,3-dihydro-indol-2-one (39.37 mmol, 86%).

Provenance & Evidence