AbstractThe 360 MHz1H and 15 MHz13C NMR spectra of 2, 2′‐biquinoline, 2,3′‐biquinoline and 6,6′‐dimethyl‐2,3′‐biquinoline are presented and assigned. The diamagnetic anisotropic effect of the neighbouring aromatic ring (Dc) and the electrostatic field effect of the nitrogen lone pair (DN) result in characteristic deshielding effects in the1H NMR spectra of these compounds. The characteristic chemical shift differences (ΔHand Δc) between nuclei at the corresponding position but on different rings is proposed as an additional assignment aid for the1H and13C NMR spectra of unsymmetric biaryls and biheteroaryls. The reaction of quinoline and of 6‐methylquinoline with sodium gives