Nickel chloride-catalyzed one-pot three-component synthesis of pyrazolophthalazinyl spirooxindoles
作者:Xiao-Nan Zhang、Yong-Xiao Li、Zhan-Hui Zhang
DOI:10.1016/j.tet.2011.07.002
日期:2011.9
A direct and efficient approach for the preparation of pyrazolophthalazinyl spirooxindoles has been developed through one-potthree-component reaction of easily available isatin, malononitrile or cyanoacetic ester, and phthalhydrazide catalyzed by nickel chloride in polyethylene glycol 600. Desired products were obtained in high to excellent yields using a simple workup procedure.
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
An efficient one-pot synthesis of novel pyrazolophthalazinyl spirooxindoles
作者:Gnanamani Shanthi、Paramasivan T. Perumal
DOI:10.1007/s12039-010-0047-2
日期:2010.5
A simple and efficient method for the synthesis of novel pyrazolophthalazinyl spirooxindoles by L-proline catalysed one-pot three-component reaction is described.
介绍了一种简单高效的方法,通过 L-脯氨酸催化的一锅三组份反应合成新型吡唑酞嗪基螺吲哚。
Kumari, Kumkum; Singh, Rahul; Singh, Krishna Nand, Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 2014, vol. 53, # 5, p. 625 - 630