An efficient route to a variety of 2-phenylindolin-3-ones from amino acid methyl esters has been developed. The reaction of amino acid methyl esters with benzyne prepared from 2-(trimethylsilyl)phenyl triflate and CsF gave 2-phenylindolin-3-ones in moderate to good yields.
the development of sequential catalytic processes. Herein, the discovery of an anthraquinone‐catalyzed thermal indole‐C3‐alkylation with benzylamines is described, which can be combined sequentially with a new visible‐light‐driven catalytic photooxidation/1,2‐shift reaction. The one‐flask tandem process converts indoles into 3‐benzylindole intermediates, which are further transformed into new fluorescent
l rearrangement has been successfully developed. This methodology allows for efficient conversion of a wide range of indoles into the synthetically significant 2,2-disubstituted indolin-3-ones, the core structure of pseudoindoxyl alkaloids, under mild reaction conditions.
An enantioselective cascade aerobic oxidation and semipinacol rearrangement reaction of 2‐aryl‐3‐alkyl‐substituted indoles via visible‐light‐driven cooperative organophotoredox and H‐bonding catalysis is reported. The current method provides an expedient and sustainable approach to furnish a variety of valuable chiral 2‐aryl‐2‐alkyl‐substituted indolin‐3‐ones in 64–90 % yield with 58–94 % ee. Preliminary