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.
通过去氢化同聚合反应,采用
铜催化的N-N键形成反应,实现了N-烷基
苯胺的合成,获得了N,N′-二烷基-N,N′-二苯基
肼,产率为72-88%。这种新策略具有直接从N-烷基
苯胺合成、使用空气作为氧化剂、操作方便、反应条件温和以及中到好的产率等优点。研究提出了一种通过配位和还原消除的可能机制。