作者:Valeriya S. Velezheva、Albert G. Kornienko、Sergey V. Topilin、Ascar D. Turashev、Alexander S. Peregudov、Patrick J. Brennan
DOI:10.1002/jhet.5570430410
日期:2006.7
A novel method for Lewis acid catalyzed Nenitzescu indole syntheses of 5-hydroxyindoles bearing different substituents in positions 1 )Alk, Bn, Ar), 2 )Me, Et, Ph), and 3 )COOEt, COMe, CONHPh) as well as tricyclic derivatives are reported. The method is simple, rapid, efficient, and allows preparation of hydroxyindoles from 1,4-benzoquinone and enamines in good to excellent yields with the use of low-polar