To a solution of 1-(4,5-diphenyloxazol-2-yl)methylamino-2,3-dihydro-4-methoxy-1H-indene (0.18 g) and methyl iodide (85 mg) in DMF (3 ml) was added K2CO3 (0.12 g). After being stirred for 16 hours, the solution was extracted with ethyl acetate. The mixture was washed with brine, dried over MgSO4 and evaporated in vacuo. The residue was purified by chromatography on silica gel to afford 1-[N-methyl-N-[(4,5-diphenyloxazol-2-yl)methyl]amino]-2,3-dihydro-4-methoxy-1H-indene (0.13 g). MS (m/z): (M+ +1) NMR (CDCl3, δ): 2.02-2.28 (1H, m), 2.44 (3H, s), 2.64-3.17 (3H, m), 3.82 (5H, s), 4.60 (1H, br), 6.73 (1H, d, J=7.9 Hz), 7.08-7.32 (2H, m), 7.32-7.48 (6H, m), 7.58-7.72 (4H, m)
