Naphthalene → 1,6-Cleve's acid

反応式

[NH2:1]C1C2C(=CC=C(S(O)(=O)=O)C=2)C=CC=1.C1C2C(=CC=CC=2)C=CC=1.[CH:26]1[C:35]2[C:30](=[CH:31][CH:32]=[CH:33][CH:34]=2)[CH:29]=[CH:28][C:27]=1[S:36]([OH:39])(=[O:38])=[O:37]>[Fe]>[NH2:1][C:31]1[C:30]2[C:35](=[CH:26][C:27]([S:36]([OH:39])(=[O:38])=[O:37])=[CH:28][CH:29]=2)[CH:34]=[CH:33][CH:32]=1

参加物

実験手順

It is known that 1-amino-naphthalene-7-sulphonic acid can be prepared, for example, by sulphonating naphthalene, nitrating the resulting 2-naphthalenesulphonic acid and subsequently reducing this with iron (Beilstein H XIV, 765 and Ullmann, volume 12, 625 (1960)). 1-Amino-naphthalene-6-sulphonic acid is always formed as a by-product in this preparation and must be separated off.