Synergistic applications of nanocomposite, ultrasound, and on‐water synthesis for efficient and green synthesis of spirooxindole derivatives via cascade C–N, C–O, and C–S bond formation
作者:Pankaj Teli、Sunita Teli、Nusrat Sahiba、Shivani Soni、Shikha Agarwal
DOI:10.1002/aoc.7393
日期:2024.4
A highly efficient, green, and multicomponent reaction method has been developed for the diversity-oriented synthesis of 32 spirooxindole derivatives via the formation of cascade C–N, C–O, and C–S bonds. The synthesis involved starch-capped zinc oxide nanocomposite as an effective heterogeneous catalyst with the synergistic application of ultrasound and on-water synthesis. By employing this approach
开发了一种高效、绿色、多组分反应方法,通过级联 C-N、C-O 和 C-S 键的形成,以多样性为导向合成 32 种螺吲哚衍生物。该合成涉及淀粉封端的氧化锌纳米复合材料作为有效的多相催化剂,并协同应用超声波和水上合成。通过采用这种方法,以高收率和相对较短的反应时间成功获得了所有所需的产物。此外,该过程中使用的催化剂表现出优异的可回收性,可连续回收和再利用多达八次,而不会损失任何催化活性。通过E-factor、eco-score等多种绿色指标评价该方案的绿色性,结果表明该方法在有机合成中的可接受性。