An iron(III) triflate catalyzed Friedländer-type heteroannulation of 2-(2-aminophenyl)-N,N-dialkyl-2-oxoamides with α-methylene carbonyl derivatives has been established, allowing facile access to a range of biologically interesting quinoline-containing tertiary amides in good yields.Investigations into the configurational stability of products led to the identification of a new type of stable axially chiral quinoline-4-carboxamide bearing a sterically demanding phenylsulfonyl C3substituent. Subsequently, an enantioselective catalytic variant was attempted. The employment of copper(II) catalysis using a chiral bisoxazoline ligand was found to be capable of providing moderate enantiocontrol.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.