Oxygen → Diaminostilbenedisulfonic acid

反応式

[N+](C1C=C(S(O)(=O)=O)C(C)=CC=1)([O-])=O.[N+:15]([C:18]1[CH:19]=[C:20]([S:39]([OH:42])(=[O:41])=[O:40])[C:21]([CH:24]=[CH:25][C:26]2[C:27]([S:35]([OH:38])(=[O:37])=[O:36])=[CH:28][C:29]([N+:32]([O-])=O)=[CH:30][CH:31]=2)=[CH:22][CH:23]=1)([O-])=O.O=O>>[NH2:15][C:18]1[CH:19]=[C:20]([S:39]([OH:42])(=[O:41])=[O:40])[C:21]([CH:24]=[CH:25][C:26]2[C:27]([S:35]([OH:38])(=[O:37])=[O:36])=[CH:28][C:29]([NH2:32])=[CH:30][CH:31]=2)=[CH:22][CH:23]=1

参加物

反応物 3

HCID 977Oxygen

HCID 84582-Methyl-5-nitrobenzenesulfonic acid2 回

HCID 194595-Nitro-2-[2-(4-nitro-2-sulfophenyl)ethenyl]benzenesulfonic acid2 回

生成物 1

HCID 6668Diaminostilbenedisulfonic acid

実験手順

Furthermore, 4-nitrotoluene-2-sulphonic acid can be used for the preparation of 4,4'-dinitrostilbene-2,2'-disulphonic acid, in which, for example, an approximately 30 to 50% strength aqueous solution of 4-nitrotoluene-2-sulphonic acid is reacted with oxidizing agents, for example with atmospheric oxygen. 4,4'-Dinitrostilbene-2,2'-disulphonic acid can be further processed by reduction to give 4,4'-diaminostilbene-2,2'-disulphonic acid (see Ber. 30, 3,100), and is an important intermediate product for the preparation of optical brighteners (A. Dorlars, C.-W. Schellhammer and J. Schroeder, Angew. Chem. 87, 693 (1975)).