反应详情

Prepared according to Example 28 using 4-bromo-2-fluoro-5-methyl-benzonitrile (1.0 g, 4.7 mmol), 3-hydroxy-azetidine-1-carboxylic acid tert-butyl ester (1.1 g, 6.5 mmol), DMF (20 mL) and NaH (60% in mineral oil, 156 mg, 6.5 mmol) to provide the title compound (1.3 g, 74%). MS (ESI): mass calcd. for C16H19BrN2O3, 366.1. m/z found, 389.1 [M+Na]+. 1H NMR (CDCl3): 7.45 (s, 1H), 6.83 (s, 1H), 4.97-4.88 (m, 1H), 4.35 (ddd, J=9.8, 6.4, 0.9 Hz, 1H), 4.09 (dd, J=10.0, 3.9 Hz, 1H), 2.36 (s, 3H), 1.47 (s, 9H).

1. customPrepared