A two-step one-pot protocol for the facile synthesis of biologically important spirooxindole derivatives such as spiro[4H-pyran-3,3′-oxindoles] and spiro[indoline-3,4′(1H′)-pyrano-[2,3-c]pyrazol-2-ones has been developed. In this method ZrO2 nanoparticles have been utilized as a reusable solid dual acid–base catalyst to get quick access to the multi-functionalized spirooxindole derivatives under solvent
两步一锅操作方案,可轻松合成
生物学上重要的螺氧杂
吲哚衍
生物,例如spiro [4 H -pyran -3,3'-oxindoles]和螺螺[indoline-3,4'(1 H ')-pyrano-已经开发了[2,3 - c ]
吡唑-2-酮。在这种方法中,ZrO 2纳米颗粒已被用作可重用的固体双酸碱催化剂,可在室温下在无溶剂条件下快速获得多功能的螺氧杂
吲哚衍
生物。该方法的主要优点是操作简便,减少反应时间,消除溶剂,产品收率高,后处理程序方便以及使用无毒且可回收的ZrO 2纳米催化剂。所有这些因素使本方法经济,绿色和可持续。