N-[4-(2-Oxoimidazolidin-1-yl)phenyl]acetamide → 1-(4-Acetamidocyclohexyl)-2-imidazolidinone

Participants

Reaction Steps

A mixture of 4213 g of 1-(p-acetamidophenyl)-2-imidazolidinone in 39,000 ml of water and 2930 g of 5% rhodium on carbon 50% wet with water is hydrogenated at 40°. The hydrogenation mixture is filtered, and the filtrate is concentrated in vacuo to dryness. The resulting solid is air-dried and then powdered. The crude product is recrystallized from 12,000 ml of acetone to give 1-(4-acetamidocyclohexyl)-2-imidazolidinone, m.p. 211°-230° as a mixture of cis and trans isomers.

Provenance & Evidence