Abstract
IR and UV spectroscopy were used to assign structures to diazonium coupling products V-VII of ethyl p-toluenesulfonylacetate, benzenesulfonylacetophenone and benzenesulfonylacetanilide. The data have established that such coupling products exist largely as chelated hydrazones. An alternative synthesis of coupling products V and VII from the corresponding arylhydrazidic chlorides and sodium arenesulfinate is described.
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