A convenient approach for the synthesis of various derivatives of pyrazolo[1,2-b]phthalazinediones in the presence of an efficient supported basic ionic liquid at ambient temperature and solvent-free media
作者:Fereshteh Hatami Sabour、Mahboobeh Nasr-Esfahani、Iraj Mohammadpoor-Baltork、Shahram Tangestaninejad、Majid Moghadam、Valiollah Mirkhani
DOI:10.1007/s13738-017-1267-x
日期:2018.3
benzoyl-substituted pyrazolo[1,2-b]phthalazinediones in high yields. Moreover, selective synthesis of mono- and bis-pyrazolo[1,2-b]phthalazinediones from dialdehydes was investigated in this approach. The catalyst could be easily separated by an external magnet and reused seven times without any significant loss of activity. Graphical AbstractAn efficient procedure is described for one-pot synthesis of various cyano-
摘要已经描述了一种方便的方法,用于在环境温度和无溶剂介质下一锅合成各种吡唑并[1,2- b ]酞嗪二酮。首先,制备了一种新型的负载型碱性离子液体([SiPMIM] OH @ MNPs),并通过FT-IR,元素分析,VSM,SEM,TEM和XRD对其进行了表征。该催化剂在芳族醛,邻苯二甲酰肼和丙二腈(或无环1,3-二羰基化合物)的一锅反应中显示出优异的催化活性,可提供高氰基,乙酰基或苯甲酰基取代的吡唑并[1,2- b ]邻苯二甲二酮。产量。此外,单-和双-吡唑并[1,2- b的选择性合成用这种方法研究了来自二醛的邻苯二甲酮二酮。该催化剂可以很容易地被外部磁体分离,并且可以重复使用七次而活性没有明显损失。 图形概要描述了一种在[SiPMIM] OH @ MNPs存在下于环境温度和无溶剂条件下一锅合成各种氰基,乙酰基或苯甲酰基取代的吡唑并[1,2- b ]邻苯二甲二酮的有效方法。