A Novel Method for the Synthesis of Spiro[indoline-Pyrazolo[4′,3′:5,6]pyrido[2,3-<i>d</i>]pyrimidine]triones by Alum as a Reusable Catalyst
作者:Sadif A. Shirvan、Ramin Ghahremanzadeh、Mojtaba Mirhosseini Moghaddam、Ayoob Bazgir、Amir Hassan Zarnani、Mohammad Mehdi Akhondi
DOI:10.1002/jhet.898
日期:2012.7
Synthesis of spiro[indoline‐pyrazolo[4′,3′:5,6]pyrido[2,3‐d]pyrimidine]trione derivatives by a cyclo‐condensation reaction of indolin‐2‐ones, barbituric acids, and 1,3‐diphenyl‐1H‐pyrazol‐5‐amines with the ionicliquid as an effective green reaction media and in the presence of Alum as a reusablecatalyst was reported. Excellent yields of products, green media, use of a reusablecatalyst, and short
吲哚啉-2-酮,巴比妥酸和1,3的环缩合反应合成螺[吲哚啉-吡唑并[4',3':5,6]吡啶[2,3- d ]嘧啶]三酮衍生物报道了以离子液体为有效绿色反应介质并以明矾为可重复使用催化剂的二苯基-1 H-吡唑-5-胺。这种新方法的主要优点是产品收率高,绿色介质,可重复使用的催化剂的使用以及较短的反应时间。
An Efficient Four-component Synthesis of Spiro[indoline-pyrazolo[4′,3′:5,6]pyrido[2,3-d]pyrimidine]triones
A four‐component reaction in the presence of Alum [KAl(SO4)2·12H2O] as an inexpensive and reusable catalyst using the ionic liquid as an effective green reaction media is reported.