反应详情

2-Iodobenzoic acid (10.06 g, 40.56 mmol) was converted to 2-iodobenzoic chloride by reacting with oxalyl chloride (5.34 mL, 60.84 mmol) in methylene chloride (100 mL), initiated by a drop DMF. The solvent and excess oxalyl chloride were removed by rotary evaporation. To a 250 mL one neck round bottom flask was charged t-butanol with THF (50 mL) and then cooled to −78 C. A solution of n-butyl lithium in hexanes (2.5 M, 24.3 mL) was added, followed by the solution of 2-iodobenzoic chloride in THF (50 mL). The resulting reaction mixture was stirred at −78 C for 20 min and then at rt for 2 hours. The reaction was quenched by water and worked up. The product was purified by flash chromatography to afford the title compound as a white solid.

1. customThe solvent and excess oxalyl chloride were removed by rotary evaporation
2. additionTo a 250 mL one neck round bottom flask was charged t-butanol with THF (50 mL)
3. temperaturecooled to −78 C
4. additionA solution of n-butyl lithium in hexanes (2.5 M, 24.3 mL) was added
5. customThe resulting reaction mixture
6. waitat rt for 2 hours
7. customThe reaction was quenched by water
8. customThe product was purified by flash chromatography