Investigations in the region of 2,3′-biquinoline. 3. Synthesis of 2′-alkyl(aryl)-1′,2′-dihydro-2,3′-biquinolines and 2′-alkyl(aryl)-2,3′-biquinolines

A method was developed for the synthesis of 2′-alkyl(aryl)-1′,2′-dihydro-2,3′-biquinolines, based on the addition of organolithium compounds to 2,3′-biquinoline in the presence of tetramethylethylenediamine. Their oxidation with manganese dioxide led to 2′-alkyl(aryl)-2,3′-biquinolines. ©1998 Plenum Publishing Corporation.