Abstract
A copper-catalyzed N―N bond-forming reaction was performed by a dehydrogenative homocoupling of N-alkylanilines, affording N,N'-dialkyl-N,N-diphenylhydrazines in 72―88% yields. This new strategy has the advantages of direct synthesis from N-alkylanilines, using air as the oxidant, convenient manipulations, mild reaction conditions and moderate to good yields. A possible mechanism by coordination and reductive elimination has been proposed.
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