SYNTHESIS OF SULFONATED 1,2-DICYANOBENZENES
- 1 July 1995
- journal article
- research article
- Published by Taylor & Francis in Phosphorus, Sulfur, and Silicon and the Related Elements
- Vol. 104 (1-4) , 161-167
- https://doi.org/10.1080/10426509508042588
Abstract
Employing the corresponding halogen or amino (via the diazonium salts) substituted 1,2-dicyanoben-zenes as starting materials 2,3- and 3,4-dicyanobenzenesulfonic acids (3) and (4) are synthesized. Several intermediates useful for the preparation of the sulfonic acids (3) and (4) are also obtained: 3- and 4-mercapto-1,2-dicyanobenzenes (5), (16), 2,3- and 3,4-dicyanobenzenesulfonyl chlorides (10), (11)), bis(2,3-dicyanophenyl)- and bis(3,4-dicyanophenyl)-disulfides (14), (15), and several sulfonamides (17)-(24) (from the sulfochlorides (10), (11). In addition, the synthesis of 4-(4-phonoxy-1,2-dicarbonitrile)benzenesulfonic acid (26) is described.Keywords
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