N,2-Dibromo-6-chloro-3,4-dihydro-2 H-苯并[ e ] [1,2,4]噻二嗪-7-磺酰胺1,1-二氧化物:一种高效,均匀的一锅催化剂水性介质下合成4 H-吡喃,吡喃并吡唑和吡唑并[1,2- b ]酞嗪衍生物†
摘要:
N,2-二溴-6-氯-3,4-二氢-2 H-苯并[ e ] [1,2,4]噻二嗪-7-磺酰胺1,1-二氧化物(DCDBTSD)作为高效且均相的催化剂通过一锅多组分反应(MCR)在水中成功地将其用于合成4 H-吡喃,吡喃并吡唑和吡唑并[1,2- b ]酞嗪衍生物。所描述的方法具有一些优点,例如温和和中性的反应介质,高收率,较短的反应时间,更清洁和更容易的反应过程以及符合绿色化学方案。
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.
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.