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Yamaguchi, Miyuki; Ogihara, Kota; Konishi, Hideyuki; Manabe, Kei
Tetrahedron letters, 05/2020, Letnik: 61, Številka: 21Journal Article
Display omitted •Synthesis of 2,3-disubstituted indoles bearing 2-hydroxyphenyl groups at the C3 positions has been achieved.•Readily available chlorophenols can be used as substrates.•Only the Pd–DHTP catalyst can effectively catalyze the desired reaction.•2-Chloro group of 2,4-dichlorophenol reacts selectively. 2,3-Disubstituted indoles bearing 2-hydroxyphenyl moieties at their C3 positions were synthesized from readily available 2-chlorophenols and alkynylanilines via aminopalladation/reductive elimination using Pd–dihydroxyterphenylphosphine catalyst. The catalyst accelerates the introduction of the 2-hydroxyphenyl group at the C3 position of the indole.
