反应 #3744046
相关文献 (1)
openreactiondata ↗doi:10.6084/m9.figshare.5104873.v1; patent:US08754075B2
反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.
实验步骤: A solution of 1-(2-fluorophenyl)-2-hydroxyethanone [CAS 218771-68-7; WO9857925, ex. 16) (2.77 g, 18.0 mmol) in dichloromethane (42 ml) was treated consecutively at 0° C. with triethylamine (6.36 g, 62.8 mmol), triethylamine trihydrofluoride (3.05 g, 18.0 mmol) and nonafluoro-n-butansulfonylfluoride (8.48 g, 26.9 mmol). The tube was sealed and the reaction mixture stirred overnight at room temperature. For the workup, the dark red solution was poured on a saturated solution of sodium hydrogencarbonate and ice, then extracted with dichloromethane. The organic layer was separated, dried over sodium sulphate and evaporated. The crude material was purified by flash chromatography on silica gel (Telos Flash Silica) using dichloromethane as the eluent to give the 2-fluoro-1-(2-fluoro-phenyl)-ethanone (1.23 g, 61% of theory) as a yellow semisolid. The tube was sealed extracted with dichloromethane The organic layer was separated dried over sodium sulphate evaporated The crude material was purified by flash chromatography on silica gel (Telos Flash Silica)
来源 ID: ord-519f76ae48314aca99c27b8ae1c7e844