反应详情

To a cooled (−78° C.) solution of n-BuLi (0.5 mL, 2.5 M solution in hexanes) in THF (3 mL) was added oxazole (0.1 mL, 1.5 mmol) via dropwise addition and the solution was stirred for 30 minutes. ZnCl2 solution (3.9 mL, 0.5 M in THF) was then added and the reaction mixture was warmed to room temperature and stirred an additional 2 hours. Pd(PPh3)4 (20 mg, 0.015 mmol) and 4-tert-butyl-N-[4-chloro-2-(4-iodo-5-methyl-[1,2,3]triazol-1-yl)-phenyl]-benzenesulfonamide (synthesized according to general procedure P, 77 mg, 0.15 mmol) were then added and the reaction mixture was heated at 80° C. overnight. The reaction mixture was subsequently diluted with EtOAc (25 mL) and the combined organics were washed with water (20 mL), dried (Na2SO4), and concentrated in vacuo. The crude product was purified by preparative TLC to afford the title compound: MS (ES) M+H expected 472.1, found 472.0.

1. additionvia dropwise addition
2. stirringstirred an additional 2 hours
3. temperaturethe reaction mixture was heated at 80° C. overnight
4. washthe combined organics were washed with water (20 mL)
5. dry with materialdried (Na2SO4)
6. concentrationconcentrated in vacuo
7. customThe crude product was purified by preparative TLC