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。
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.