1-Sulfo-2-unsubstituted aromatic + 1-unsubstituted-2-Sulfoaromatic > vic-Dihydroxyaromatic + Sulfonite
[H][c:2](:[c:11]):[c:1](:[c:10])S([#8-])(=O)=O>>[#8]-[c:1](:[c:10]):[c:2](-[#8]):[c:11]
[H][c:2](:[c:11]):[c:1](:[c:10])S([#8-])(=O)=O
None
[#8]-[c:1](:[c:10]):[c:2](-[#8]):[c:11]
None
