Combination of hydrazine polyanion strategy and ring-closing metathesis in the synthesis of heterocycles
作者:Svetlana Tšupova、Oleg Lebedev、Uno Mäeorg
DOI:10.1016/j.tet.2011.11.091
日期:2012.1
of hydrazine dianions with bromoalkenes and subsequent cyclization using Grubbs’ catalysts. The described method provides fast and easy access to the substrates for ring-closing metathesis and the corresponding heterocycles containing a hydrazine moiety. The scope and limitations of the new method are also demonstrated.
已经报道了从二取代肼开始合成环状肼衍生物的有效方法。该方法基于肼二价阴离子与溴代烯烃的选择性烷基化以及随后使用Grubbs催化剂的环化作用。所描述的方法提供了用于环封闭复分解的底物和相应的含有肼部分的杂环的快速且容易的通道。还演示了新方法的范围和局限性。