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公开(公告)号:US4348335A
公开(公告)日:1982-09-07
申请号:US139952
申请日:1980-04-14
申请人: Karl Linhart , Dieter Pawellek , Harald Gleinig
发明人: Karl Linhart , Dieter Pawellek , Harald Gleinig
IPC分类号: C07C319/20 , C07C67/00 , C07C209/00 , C07C209/36 , C07C211/56 , C07C213/00 , C07C213/02 , C07C215/82 , C07C217/90 , C07C313/00 , C07C323/09 , C07C143/29
CPC分类号: C07C215/82
摘要: Polynitrated diaryl compounds of the formula given in the description are reduced with 1-2 mols of sulphides, or compounds which donate sulphide ions, per mol of nitro group in the presence of 0.5-10 mols of ammonia per mol of starting compound at 30.degree.-110.degree. C. to give nitroamino-diaryl compounds, for example 4,4'-dinitro-dibenzyl-2,2'-disulphonic acid is reduced to 4-nitro-4'-amino-stilbene-2,2'-disulphonic acid.
摘要翻译: 在描述中给出的通式给出的多硝基二芳基化合物在每10摩尔起始化合物在0.5-10摩尔氨存在下,每1-2摩尔硫化物或者硫化物离子的化合物还原, -110℃,得到硝基氨基 - 二芳基化合物,例如将4,4'-二硝基 - 二苄基-2,2'-二磺酸还原成4-硝基-4'-氨基 - 茋-2,2'-二磺酸 酸。
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公开(公告)号:US3978131A
公开(公告)日:1976-08-31
申请号:US516946
申请日:1974-10-22
IPC分类号: C07B61/00 , B01J25/00 , B01J25/02 , C07C20060101 , C07C67/00 , C07C209/00 , C07C209/38 , C07C211/51 , C07C211/54 , C07C85/02
CPC分类号: C07C209/36
摘要: 4-AMINO-DIPHENYLAMINE IS PREPARED BY CATALYTICALLY HYDROGENATING 4-NITROSO-DIPHENYLAMINE IN A WATER-IMMISCIBLE SOLVENT IN THE PRESENCE OF Raney nickel as a catalyst. The hydrogenation reaction is generally carried out at a temperature in the range of from 20.degree. to 150.degree.C and can be carried out under an elevated hydrogen pressure of up to 50 atmospheres.
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