To a flame-dried microwave vial equipped with a magnetic stir bar was added THF (0.5 mL 0.4 M) and diisopropylamine (36 μL, 0.26 mmol, 1.3 equiv). The reaction mixture was cooled to 0 °C by transferring the reaction apparatus to an ice-water bath. The reaction mixture was stirred for 10 minutes at 0 °C, before n-BuLi (0.10 mL, 0.24 mmol, 1.2 equiv, 2.5 M in hexanes) was added dropwise to the reaction. After stirring for 15 minutes at 0 °C, Bu3SnH (65 μL, 0.24 mmol, 1.2 equiv) was added to the reaction mixture and the reaction mixture was stirred at 0 o C for an additional 30 minutes to give a yellow solution.