Methanol → HCID 20025753, compound

Participants

Reaction Steps

A mixture of 12 parts of 1-ethyl-3-(4-nitrophenyl)-2-imidazolidinone, 1 part of a solution of thiophene in ethanol 4% and 200 parts of methanol was hydrogenated at normal pressure and at room temperature with 2 parts of palladium-on-charcoal catalyst 10%. After the calculated amount of hydrogen was taken up, the catalyst was filtered off and the filtrate was evaporated. The residue was crystallized from 2,2'-oxybispropane. The product was filtered off and dried, yielding 9.6 parts (93%) of 1-(4-aminophenyl)-3-ethyl-2-imidazolidinone (18).

Provenance & Evidence