In a dry Argon atmosphere Reike Zinc/THF suspension (5 g/100 mL) (2.54 mL, 2.0 mmol) was transferred into a round-bottom flask via syringe with a 12 gauge needle. Then isopropyl iodide (0.18 mL, 1.82 mmol) was added and stirring was started right away. The content turned warm and stirring was continued at rt for 4-5 hours. In a 10 mL CEM microwave tube was dissolved N-(4-(dimethylphosphoryl)phenyl)-2-iodo-9-vinyl-9H-purin-6-amine (0.20 g, 0.46 mmol), PdCl2(PPh3)2 (19 mg, 0.027 mmol) in 1 mL dry DMF. Isopropylzinc iodide/THF solution was transferred to the microwave tube via syringe. The reaction was heated on microwave (60° C./5 min). The reaction mixture was filtered through celite, washed with EtOAc, the filtrate was concentrated, purified on ISCO combiFlash Column (SiO2, 12 g).
