反应详情

Following the general procedure for Example 12 (step 2), boron tribromide (1.0 M solution in dichloromethane, 7.75 mL, 7.75 mmol) was added to the product from step 1 (0.75 g, 3.50 mmol) in dichloromethane (10 mL) to afford the title compound was obtained (0.26 g, 36%) as a yellow solid.