Abstract
Ruthenium catalyzed oxidative dearomatization-alkoxylation of N-Boc indoles for the synthesis of 2-alkoxyindolin-3-ones was described. The N-Boc indoles can be transformed into 2-alkoxyindolin-3-ones with RuCl3·3H2O as catalyst and tert-butyl hydroperoxide (TBHP, 3.0 equiv) as oxidant in dichloromethane/alcohol. Furtherly, the mechanism had been proposed on the basis of control experiments and isolation of intermediates.
Graphical Abstract
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Supporting information
Full experimental detail, 1H and 13C NMR spectra. This material can be found via the “Supplementary Content” section of this article’s webpage.