Investigation of substituted dihydronaphthalenes using1H and13C NMR spectroscopy

Abstract 1 H and 13 C NMR studies were carried out on the substituted dihydronaphthalene compounds 1,2‐dihydro‐8‐isopropyl‐6,7‐dimethoxy‐2‐methylnaphthalene, 3‐bromo‐1, 2‐dihydro‐8‐isopropyl‐6, 7‐dimethoxy‐2‐methylnaphthalene, 3, 4‐dihydro‐5‐isopropyl‐6, 7‐dimethoxy‐3‐methyl‐1(2 H )‐naphthalenone, 1, 2‐dihydro‐6, 7‐dimethoxy‐2, 8‐dimethylnaphthalene, 3‐bromo‐1, 2‐dihydro‐6, 7‐dimethoxy‐2, 8‐dimethylnaphthalene and 3, 4‐dihydro‐6, 7‐dimethoxy‐3, 5‐dimethyl‐1(2 H )‐naphthalenone. Complete assignments of the proton and carbon spectra were made using one‐ and two‐dimensional NMR techniques including APT, COSY, NOESY and 1 H‐ 13 C HETCOR spectroscopy.