Clean synthesis of spiro[indole-3,8â²-phenaleno[1,2-<i>b</i>]pyran]-9â²-carbonitriles and spiro[indole-3,4â²-pyrano[4,3-<i>b</i>]pyran]-3â²-carbonitriles by one-pot, three-component reactions
An environmentally benign three-component reaction in aqueous media has been reported for the synthesis of spiro[indole-3,8′-phenaleno[1,2-b]pyran]-9′-carbonitriles and spiro[indole-3,4′-pyrano[4,3-b]pyran]-3′-carbonitriles. J. Heterocyclic Chem., (2010).
已报道在水性介质中对环境无害的三组分反应可合成螺[吲哚-3,8'-苯并[1,2- b ]吡喃] -9'-腈和螺[吲哚-3,4' -吡喃并[4,3- b ]吡喃] -3′-腈。J.杂环化学。(2010)。