ZrO2 Nanoparticles-Supported Cu2(II)-β-Cyclodextrin Mediated Synthesis of N-2 Substituted Tetrazoles by [2+3] Cycloaddition and Post Tetrazole Alkylation
作者:Yarabhally R. Girish、Kothanahally S. Sharath Kumar、Kereyagalahally H. Narasimhamurthy、Kanchugarakoppal S. Rangappa、Sheena Shashikanth
DOI:10.14233/ajchem.2018.21192
日期:——
An efficient one-pot ZrO2 nanoparticles-supported Cu2(II)-β-cyclodextrin promoted [2+3] cycloaddition of benzonitriles and sodium azide followed by post tetrazole alkylation using aralkyl esters for the synthesis of N-2-substituted tetrazoles has been presented. One-pot operation, atom-economical, regioselectivity and good yields are the main advantages of this protocol. From the atom economy, it is clear that, catalyst can be reused up to four times without any appreciable changes in catalytic activity
本研究介绍了一种高效的一锅式 ZrO2 纳米颗粒支撑的 Cu2(II)-β- 环糊精促进苯腈类化合物和叠氮化钠的 [2+3] 环加成反应,然后使用芳基酯进行后四唑烷基化,以合成 N-2 取代的四唑。单锅操作、原子经济性、区域选择性和高产率是该方法的主要优点。从原子经济性来看,催化剂可以重复使用多达四次,而催化活性不会发生明显变化