[N+:1]([C:4]1[CH:5]=[C:6]([CH:27]=[CH:28][C:29]=1Br)[C:7]([C:9]1[CH:14]=[CH:13][CH:12]=[C:11]([C:15](=[O:26])[C:16]2[CH:21]=[CH:20][C:19](Br)=[C:18]([N+:23]([O-])=O)[CH:17]=2)[CH:10]=1)=[O:8])([O-])=O.[H][H].N>[Pd].C(O)(C)C>[NH2:1][C:4]1[CH:5]=[C:6]([CH:27]=[CH:28][CH:29]=1)[C:7]([C:9]1[CH:14]=[CH:13][CH:12]=[C:11]([C:15](=[O:26])[C:16]2[CH:21]=[CH:20][CH:19]=[C:18]([NH2:23])[CH:17]=2)[CH:10]=1)=[O:8]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°~35C. 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 crystals 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 was filtered, washed and dried to obtain 1.9 g of 1,3-bis(3-aminobenzoyl)benzene. The yield was 30%.
読み込み中…
