Ammonia → HCID 15219320, compound

Participants

Reaction Steps

To a sealed glass reaction vessel equipped with a thermometer, stirrer and reflux condenser, 10.7 g (0.02 mole) of 1,3-bis(3-nitro-4-bromobenzoyl)benzene, 0.43 g of a 5% palladium/activated carbon catalyst (a product of M. E. Chemcat Co.) and 50 ml of isopropyl alcohol were charged. Hydrogen was introduced with stirring at 30°~35° C. Absorbed hydrogen was 2.20 l (0.098 mole) over 9 hours. Successively, 3.6 g (0.06 mole) of a 28% aqueous ammonia solution was added and introduction of hydrogen was continued at 30°~35° C. for 6 hours and additionally at 60° C. for 4 hours with stirring. Further absorbed hydrogen was 0.401 g (0.018 mole). The catalyst was removed by filtration at the same temperature, 4.5 g of a 36% aqueous hydrochloric acid solution was added to the filtrate, and the mixture was allowed to cool. The precipitated crystal of 1,3-bis(3-aminobenzoyl)benzene hydrochloride were filtered, dissolved in 200 ml of water, and neutralized with a 28% aqueous ammonia solution. The precipitated crystals were filtered, washed and dried to obtain 1.9 g of 1,3-bis(3-aminobenzoyl)benzene. The yield was 30%.

Provenance & Evidence