反应详情

N-biphenyl-3-ylmethyl-acetamide (860 mg, 3.8 mmol) was dissolved in 10 mL of toluene. To this was added 611 mg of 60% NaH (mineral oil) and MeI (0.48 mL, 7.6 mmol). The resulting mixture was stirred overnight then filtered. The solvent was removed under vacuum to yield 980 mg (108% yield) of N-biphenyl-3-ylmethyl-N-methyl-acetamide. HRMS ((M+H) calcd for C16H18N): 240.1389; found: 240.1398. 1H NMR and 13C NMR show a mixture of rotamers at room temperature. 1H NMR (500 MHz, CDCl3) δ: 2.17 (s), 2.19 (s), 2.96 (s), 2.99 (s), 4.60 (s), 4.66 (s), 7.15-7.60 (overlapping m). 13C NMR (125 MHz, CDCl3) δ: 21.55, 21.91, 33.84, 35.61, 50.66, 54.33, 125.05, 125.16, 126.25, 126.55, 126.85, 127.00, 127.20, 127.23, 127.42, 127.65, 128.79, 128.90, 129.06, 129.45, 137.19, 137.95, 140.65, 140.95, 141.64, 142.12, 170.79, 171.08.

1. filtrationthen filtered
2. customThe solvent was removed under vacuum