Synthesis of Spiro[benzo[h]chromene-4,3′-indoles] and Spiro[benzo[f]chromene-1,3′-indoles]
作者:S. H. Poghosyan、M. V. Poghosyan
DOI:10.1134/s1070428019120029
日期:2019.12
New spiro heterocycles, spiro[benzo[h]chromene-4,3′-indoles] and spiro[benzo[f]chromene-1,3′-indoles], have been synthesized in 50–60% yield by three-component condensation of substituted isatins with malononitrile or ethyl cyanoacetate and naphthalen-1-ol or naphthalen-2-ol. The described reactions follow a cascade cyclization pathway and provide a regioselective method of synthesis of the title compounds
通过三组分缩合合成了新的螺环杂环,螺环[苯并[ h ]色烯-4,3'-吲哚]和螺环[苯并[ f ]色烯-1,3'-吲哚]丙二腈或氰基乙酸乙酯和萘-1-醇或萘-2-醇取代的isatins。所述反应遵循级联环化途径,并提供了区域选择性的标题化合物合成方法。
Synthesis of spirochromene derivatives catalyzed by Mn(bpyo)2/MCM-41 in water
作者:Mansoureh Daraie、Yahya S. Beheshtiha、Majid M. Heravi
DOI:10.1007/s00706-014-1292-8
日期:2015.1
A three-component one-pot synthesis of spirochromene derivatives by condensing cyclic 1,3-diketones, isatin or acenaphthenequinone, and malononitrile using a catalytic amount of Mn(bpyo)(2)/MCM-41 in refluxing water is reported.