Ein Verfahren zur Darstellung eines 3-alkylierten Indols, Intermediate und ein Verfahren zur Darstellung eines Derivats

A process for the preparation of a 3-alkylated indole, which comprises:- a) reacting a N-(2-nitrostyryl) enamine with an alkylating agent to afford an imine salt, b) optionally reacting the imine salt with water to afford a (2-nitrophenyl)acetaldehyde, and c) reacting the imine salt or the (2-nitrop...

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Hauptverfasser: JACOBS, ROBERT TOMS, WILMINGTON, DELAWARE 19808, US, COSTELLO, GERARD FRANCIS, MACCLESFIELD, CHESHIRE SK10 3DR, GB, HARRISON, PETER JOHN, MACCLESFIELD, CHESHIRE SK10 3NY, GB, BROOK, STEPHEN ALAN, MACCLESFIELD, CHESHIRE, GB
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Sprache:ger
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Zusammenfassung:A process for the preparation of a 3-alkylated indole, which comprises:- a) reacting a N-(2-nitrostyryl) enamine with an alkylating agent to afford an imine salt, b) optionally reacting the imine salt with water to afford a (2-nitrophenyl)acetaldehyde, and c) reacting the imine salt or the (2-nitrophenyl)acetaldehyde with a reducing agent capable of selectively reducing the nitro group, to afford the desired 3-alkylated indole. a