Base-Controlled Regioselective Functionalization of Chloro-Substituted Quinolines

J Org Chem. 2018 Jan 19;83(2):871-880. doi: 10.1021/acs.joc.7b02855. Epub 2017 Dec 28.

Abstract

We prepared a number of di- and trifunctionalized quinolines by selective metalation of chloro-substituted quinolines with metal amides followed by reaction with different electrophiles. Metalation of the C-3 position of the quinolinic ring with lithium diisopropylamide at -70 °C is easy to achieve, whereas reaction with lithium-magnesium and lithium-zinc amides affords C-2 or C-8 functionalized derivatives in a regioselective fashion. These complementary methods could be rationalized by DFT calculations and are convenient strategies toward the synthesis of bioactive quinoline derivatives such as chloroquine analogues.

Publication types

  • Research Support, Non-U.S. Gov't