1,3,6-Naphthalenetrisulfonic acid → Naphthalene
Reaction equation
[C:1]1(S(O)(=O)=O)[C:10]2[C:5](=[CH:6][C:7](S(O)(=O)=O)=[CH:8][CH:9]=2)[CH:4]=[C:3](S(O)(=O)=O)[CH:2]=1>S(=O)(=O)(O)O>[CH:9]1[C:10]2[C:5](=[CH:4][CH:3]=[CH:2][CH:1]=2)[CH:6]=[CH:7][CH:8]=1Participants
Reactant 1
Product 1
Reagents, catalysts & solvents 1
Procedure
If a mixture containing naphthalene-1,3,6-trisulphonic acid, dissolved in sulphuric acid, such as is obtained from the trisulphonation of naphthalene, is employed, then, for example when using a naphthalenetrisulphonic acid solution in about 100% strength sulphuric acid, containing about 33.8% of naphthalene-1,3,6-trisulphonic acid, about 5.8% of naphthalene-1,3,7-trisulphonic acid and about 3.7% of naphthalene-1,3,5-trisulphonic acid, about 96% of theory of nitro-T-acid, about 3% of theory of 1-nitronaphthalene-2,5,7-trisulphonic acid and about 0.5% of theory of 2-nitronaphthalene-3,6,8-trisulphonic acid was obtained as the nitration products of the naphthalene-1,3,6-trisulphonic acid. In that case, about 45% of theory of 1-nitronaphthalene-3,5,7-trisulphonic acid and about 7% of theory of 2-nitronaphthalene-3,5,7-trisulphonic acid are additionally obtained as nitration products of the naphthalene-1,3,7-trisulphonic acid, of which latter compound about 31% of theory remains un-nitrated. Furthermore, about 62% of theory of 1-nitronaphthalene-4,6,8-trisulphonic acid and about 8% of theory of 2-nitronaphthalene-4,6,8-trisulphonic acid are obtained as nitration products of naphthalene-1,3,5-trisulphonic acid, of which latter compound about 19% of theory remains un-nitrated.
Sources & evidence
- ORD record
- ord-511134e75a574245b2b0259fb9d29d36
- Source dataset
- uspto-grants-1983_03
- Patent number
- US04377535
Reaction notes
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