Sulfur trioxide → 2-Methyl-5-nitrobenzenesulfonic acid
反応式
S(=O)(=O)=O.[N+:5]([C:8]1[CH:9]=[C:10]([S:15]([O:18]S(C2C(C)=CC=C([N+]([O-])=O)C=2)(=O)=O)(=[O:17])=[O:16])[C:11]([CH3:14])=[CH:12][CH:13]=1)([O-:7])=[O:6]>O>[N+:5]([C:8]1[CH:9]=[C:10]([S:15]([OH:18])(=[O:16])=[O:17])[C:11]([CH3:14])=[CH:12][CH:13]=1)([O-:7])=[O:6]参加物
4
実験手順
In this procedure, the reaction mixture is obtained as a black, tarry suspension towards the end of the addition of sulphur trioxide and, after hydrolysis of the p-nitrotoluene-2-sulphonic acid anhydride with water, an aqueous solution of p-nitrotoluene-2-sulphonic acid is formed from the suspension, and this is treated with active charcoal, before or after separating off water-insoluble by-products, in order to separate off dissolved, coloured compounds and dissolved, unreacted p-nitrotoluene.