反应详情

温度

-78 °C

To a solution of 2-(2-bromo-thiophen-3-yl)-4-chloro-pyridine (80 mg, 0.3 mmol) in Et2O (3 mL) at −78° C. was added n-BuLi (1.6 M in hexanes, 0.2 mL). After 10 min, MeI (70 mg, 0.5 mmol) was added. The resulting mixture was maintained at −78° C. for 2 h, then was warmed to room temperature and stirred for 3 h. The reaction mixture was treated with 2 M aqueous NH4Cl and extracted with EtOAc. The organic layer was dried and concentrated to yield a residue. The residue was purified by preparative TLC (hexanes/EtOAc) to yield 4-chloro-2-(2-methyl-thiophen-3-yl)-pyridine as a solid.

1. temperaturewas warmed to room temperature
2. extractionextracted with EtOAc
3. customThe organic layer was dried
4. concentrationconcentrated
5. customto yield a residue
6. customThe residue was purified by preparative TLC (hexanes/EtOAc)