A facile method for the synthesis of 3-substituted 3H-indol-3-ols has been developed. Thus, 2-isocyanophenyl ketones are allowed to react with various Grignardreagents to give the corresponding desired indolol derivatives in generally fair to good yields. The formation of 3-aryl-2,3-dimethylindolin-3-ols by the reaction of 2-isocyanobenzophenones with 2 M amounts of methylmagnesium bromide is also
Study of the Addition of Grignard Reagents to 2-Aryl-3<i>H</i>-indol-3-ones<sup>1</sup>
作者:Yahua Liu、William W. McWhorter
DOI:10.1021/jo020715f
日期:2003.4.1
Grignardreagents are added to the carbonyl group of 2-aryl-3H-indol-3-ones to generate 3-alkyl(or phenyl)-2-aryl-3H-indol-3-ols, which are in turn rearranged to yield 2-alkyl(or phenyl)-2-aryl-1,2-dihydro-3H-indol-3-ones.
Biocatalytic Stereoselective Oxidation of 2-Arylindoles
作者:Sarah E. Champagne、Chang-Hwa Chiang、Philipp M. Gemmel、Charles L. Brooks、Alison R. H. Narayan
DOI:10.1021/jacs.3c12393
日期:2024.1.31
3-hydroxyindolenines is complicated by overoxidation, rearrangements, and complex product mixtures. The selectivity possible in enzymatic reactions can overcome these challenges and deliver enantioenriched products. Herein, we present the development of an asymmetric biocatalyticoxidation of 2-arylindole substrates aided by a curated library of flavin-dependent monooxygenases (FDMOs) sampled from an ancestral sequence