作者:Yao Li、Deng Hong、Ping Lu、Yanguang Wang
DOI:10.1016/j.tetlet.2011.05.147
日期:2011.8
A regioselective synthesis of 1,3,4,5-tetrasubstituted pyrazoles is established between 2-azidoacrylates and hydrazonyl chlorides in the presence of triethylamine. The yields are moderate (43–73%) and a possible mechanism for this transformation is postulated.
在三乙胺存在下,在2-叠氮丙烯酸酯和酰氯之间建立了1,3,4,5-四取代的吡唑的区域选择性合成。产量中等(43-73%),并且推测了这种转化的可能机制。