Ultrasound-Promoted One-Pot, Three-Component Synthesis of Spiro[indoline-3,1'-pyrazolo[1,2-b]phthalazine] Derivatives
作者:Juxian Wang、Xiaoguang Bai、Changliang Xu、Yucheng Wang、Wei Lin、Yi Zou、Daqing Shi
DOI:10.3390/molecules17078674
日期:——
A series of 3'-aminospiro[indoline-3,1'-pyrazolo[1,2-b]phthalazine]-2,5',10'-trione derivatives have been synthesized by a one-pot three-component reaction of isatin, malononitrile or ethyl cyanoacetate and phthalhydrazide catalyzed by piperidine under ultrasound irradiation. For comparison the reactions were carried out under both conventional and ultrasonic conditions. In general, improvement in
通过靛红的一锅三组分反应合成了一系列3'-氨基螺[indoline-3,1'-吡唑并[1,2-b]酞嗪]-2,5',10'-三酮衍生物在超声辐照下由哌啶催化的丙二腈或氰基乙酸乙酯和邻苯二甲酰肼。为了比较,反应在常规和超声条件下进行。一般来说,与经典条件相比,当反应在超声处理下进行时,观察到速率和产率的提高。