The one-pot four-component reaction of benzohydrazide (2-picolinohydrazide), acetylenedicarboxylate, isatins and malononitrile (ethyl cyanoacetate) with triethylamine as base catalyst afforded functionalized 1-benzamidospiro[indoline-3,4'-pyridines] in good yields. H-1 NMR spectra indicated that an equilibrium of cis/trans-conformations exist in the obtained products.
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Hebei Normal Univ, Coll Chem & Mat Sci, Shijiazhuang 050024, Peoples R ChinaHebei Normal Univ, Coll Chem & Mat Sci, Shijiazhuang 050024, Peoples R China
Guo, Rui-Yun
An, Zhi-Min
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Hebei Normal Univ, Coll Chem & Mat Sci, Shijiazhuang 050024, Peoples R ChinaHebei Normal Univ, Coll Chem & Mat Sci, Shijiazhuang 050024, Peoples R China
An, Zhi-Min
Mo, Li-Ping
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Hebei Normal Univ, Coll Chem & Mat Sci, Shijiazhuang 050024, Peoples R ChinaHebei Normal Univ, Coll Chem & Mat Sci, Shijiazhuang 050024, Peoples R China
Mo, Li-Ping
Yang, Shu-Tao
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Hebei Normal Univ, Coll Chem & Mat Sci, Shijiazhuang 050024, Peoples R ChinaHebei Normal Univ, Coll Chem & Mat Sci, Shijiazhuang 050024, Peoples R China
Yang, Shu-Tao
Liu, Hong-Xia
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Hebei Normal Univ, Coll Chem & Mat Sci, Shijiazhuang 050024, Peoples R ChinaHebei Normal Univ, Coll Chem & Mat Sci, Shijiazhuang 050024, Peoples R China
Liu, Hong-Xia
Wang, Shu-Xia
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Hebei Normal Univ, Coll Chem & Mat Sci, Shijiazhuang 050024, Peoples R ChinaHebei Normal Univ, Coll Chem & Mat Sci, Shijiazhuang 050024, Peoples R China
Wang, Shu-Xia
Zhang, Zhan-Hui
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Hebei Normal Univ, Coll Chem & Mat Sci, Shijiazhuang 050024, Peoples R ChinaHebei Normal Univ, Coll Chem & Mat Sci, Shijiazhuang 050024, Peoples R China