反应详情

The title compound was prepared from the product from step 4 (0.74 g, 2.5 mmol) and BBr3 (1M in CH2Cl2, 7.5 mL, 7.5 mmol) using the Step 2 procedure with 75% yield (0.5 g). 1HNMR (400 MHz, CDCl3) δ 6.78 (d, J=8 Hz, 1H), 6.84 (m, 3H), 6.95 (m, 4H), 7.29 (d, J=3.6 Hz, 1H), 7.83 (d, J=3.6 Hz, 1H), 7.88 (d, J=8.8 Hz, 2H).