A facile and efficient reaction of α,β-unsaturated ketones and 3-amino-1-phenyl-1H-pyrazol-5(4H)-one in aqueous and acetonitrile medium
作者:Shuangshuang Xu、Zhansheng Wang、Xiuling Li、Liangce Rong、Shu-Jiang Tu
DOI:10.1016/j.tet.2016.07.073
日期:2016.9
A facile and efficient synthesis of pyrazolo[3,4-b]pyridines, indeno[1,2-b]pyrazolo[4,3-e]pyridine and benzo[h]pyrazolo[3,4-b]quinoline derivatives from the reaction of α,β-unsaturated ketone and 3-amino-1-phenyl-1H-pyrazol-5(4H)-one under mild conditions was reported. This reaction could be operated in aqueous and acetonitrile medium. The other advantages of this reaction were simple operation, mild
一种高效合成吡唑并[3,4- b ]吡啶,茚并[1,2- b ]吡唑并[4,3- e ]吡啶和苯并[ h ]吡唑并[3,4- b ]喹啉衍生物。报道了α,β-不饱和酮与3-氨基-1-苯基-1 H-吡唑-5(4 H)-one在温和条件下的反应。该反应可以在含水和乙腈介质中进行。该反应的其他优点是操作简单,反应条件温和,产率高和底物范围广。此外,3-amino-1-phenyl-1 H -pyrazol-5(4 H-一是用于合成这些杂环化合物的有效试剂。从实验事实来看,他的催化剂p -TSA·H 2 O和水都在该合成中起关键作用。