Department of Chemistry, University of Isfahan, Iran.
ACS Comb Sci. 2012 Dec 10;14(12):657-64. doi: 10.1021/co300047j. Epub 2012 Nov 28.
A one-pot, three-component condensation reaction of an isatin, aminopyrazole, and alkyl cyanoacetate in water to give 2,6'-dioxo-1',5',6',7'-tetrahydrospiro[indoline-3,4'-pyrazolo[3,4-b]pyridine]-5'-carbonitrile with good yields, at 90 °C, using a Et(3)N as catalyst, is described.
一锅法、三组分缩合反应,以靛红、氨基吡唑和氰基乙酸乙酯为原料,在 90°C 下,以三乙胺为催化剂,在水中反应得到 2,6'-二氧代-1',5',6',7'-四氢螺[吲哚啉-3,4'-吡唑并[3,4-b]吡啶]-5'-甲腈,产率良好。