以三乙胺为基础催化剂的苯甲酰肼(2-picolinohydrazide),乙炔二羧酸酯,靛红和丙二腈(氰基乙酸乙酯)的一锅四组分反应可提供高收率的官能化1-benzamidospiro [indoline-3,4'-pyrididines]。(1)1 H NMR光谱表明,所获得的产物中存在顺式/反式构型的平衡。
One-pot four-component reaction for convenient synthesis of functionalized 1-benzamidospiro[indoline-3,4'-pyridines]
作者:Chao Wang、Yan-Hong Jiang、Chao-Guo Yan
DOI:10.3762/bjoc.10.281
日期:——
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. (1)H NMR spectra indicated that an equilibrium of cis/trans-conformations exist in the obtained products.
以三乙胺为基础催化剂的苯甲酰肼(2-picolinohydrazide),乙炔二羧酸酯,靛红和丙二腈(氰基乙酸乙酯)的一锅四组分反应可提供高收率的官能化1-benzamidospiro [indoline-3,4'-pyrididines]。(1)1 H NMR光谱表明,所获得的产物中存在顺式/反式构型的平衡。