Hydrazine hydrate (1:1) → 4-(1-Ethyl-1,7-diazaspiro[4.4]nonan-7-YL)-2-isopropoxyaniline

Participants

Reaction Conditions

Reaction Steps

A mixture of 250 mg of 1-ethyl-7-[4-nitro-3-(propan-2-yloxy)phenyl]-1,7-diazaspiro[4.4]nonane, 450 mg of hydrazine hydrate and 40 mg of 10% palladium-on-carbon in 10 ml of ethanol is heated at 80° C. (bath) for 4 h 30 min. 450 mg of hydrazine hydrate are then added and the reflux is maintained for 1 h. The mixture is filtered and the filtrate is concentrated under vacuum, so as to obtain 230 mg of 4-(1-ethyl-1,7-diazaspiro[4.4]non-7-yl)-2-(propan-2-yloxy)aniline in the form of a brown oil.

Provenance & Evidence