Acid-Catalyzed Protocol for the Synthesis of Novel 6-Substituted Tetrahydroquinolines by Highly Regioselective C6-Functionalization of Tetrahydroquinolines with Chromene Hemiacetals or β-Nitrostyrenes

Author:

Meshram Harshadas1,Kumar Nandigama1,Kumar Rayala1,Rao L.1,Muthineni Narmada1,Ramesh Tungana1,Babu Nanubolu2

Affiliation:

1. CSIR-Indian Institute of Chemical Technology, Medicinal Chemistry and Pharmacology Division

2. Laboratory of X-ray Crystallography, CSIR-Indian Institute of Chemical Technology

Abstract

A simple and novel method has been developed for the C6-functionalization of unprotected tetrahydroquinoline with chromenes or β-nitrostyrenes in aqueous medium to afford novel 6-substituted tetrahydroquinolines. This method is simple and convenient, and has low costs and mild reaction conditions. Regioselectively C6-alkylated products were obtained exclusively from tetrahydroquinoline, without the formation of C5-, C7-, C8-, or N-alkylated products.

Publisher

Georg Thieme Verlag KG

Subject

Organic Chemistry,Catalysis

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