Abstract
By application of the furoquinoline ring synthesis described in the preceding paper*1, various substituted derivatives of dihydrofurancarboxyanilide were synthesized and the corresponding dihydrofuroquinoline derivatives were obtained, with the exception of 3′-nitroanilide. Polyphosphoric acid treatment of 3′-nitro (2, 3-dihydro-4-furoyl) anilide resulted in recovery of the starting compound and nitro-furoquinoline was not obtained. Ultraviolet spectra of synthesized furoquinolines were taken and their absorption curves were classified according to the nomenclature of Klevens and others. With consideration of the effect of the substituents on the spectra, the position of the substituents in the furoquinolines obtained by cyclization of 3′-substituted anilides was presumed.
