ZnS Nanoparticles: An Efficient Catalyst for the One-Pot Synthesis of Spiro [Pyrrolidine-2, 3'-Oxindole] Derivatives from Phenothiazinyl Chalcones
作者:K. L. Ameta、Biresh Kumar、Nitu S. Rathore
DOI:10.2174/1570178611310040004
日期:2013.5.1
ZnS-nanoparticles, as recyclable heterogeneous catalyst, efficiently promoted in the synthesis of
spiro[pyrrolidine-2,3'-oxindole] derivatives through three-component reaction of isatin, α-amino acid and phenothiazinyl
chalcones. An azomethine ylide generated by decarboxylative condensation of isatin with α-amino acid, and chalcones
have been used as trapping dipolarophiles. ZnS nanoparticles were synthesized by aqueous chemical method. The advantages
of this method lie in its simplicity, cost effectiveness, and easier scaling up for large scale synthesis.
ZnS纳米颗粒作为可回收的异相催化剂,在通过伊沙丁、α-氨基酸和苯噻嗪基查尔酮的三组分反应合成spiro[pyrrolidine-2,3'-oxindole]衍生物中有效促进了反应。通过伊沙丁与α-氨基酸的脱羧缩合生成的亚胺盐和查尔酮被用作捕获的双极亲和体。ZnS纳米颗粒通过水相化学方法合成。这种方法的优点在于其简单、成本效益高,并且更容易扩大到大规模合成。