Facile synthesis of the spiro-pyridoindolone scaffold <i>via</i> a gold-catalysed intramolecular alkynol cyclisation/hydroindolylation
作者:Mahesh H. Shinde、Chepuri V. Ramana
DOI:10.1039/d1ob02483c
日期:——
A simple approach for the synthesis of pyridoindolone scaffolds with a spiroannulated tetrahydrofuran ring is described. The overall process comprises intramolecular sequential gold-catalysed 5-endo-dig alkynol cycloisomerization and subsequent addition of indole C2 to the in situ generated oxocarbenium cation.