Potassium Fluoride → HCID 11543746、化合物
反応式
Br[C:2]1[CH:3]=[C:4]2[C:8](=[C:9]([F:11])[CH:10]=1)[NH:7][C:6](=[O:12])[C:5]2([CH3:14])[CH3:13].[CH3:15][N:16]1[C:20]([C:21]#[N:22])=[CH:19][CH:18]=[C:17]1B(O)O.[F-].[K+]>>[F:11][C:9]1[CH:10]=[C:2]([C:17]2[N:16]([CH3:15])[C:20]([C:21]#[N:22])=[CH:19][CH:18]=2)[CH:3]=[C:4]2[C:8]=1[NH:7][C:6](=[O:12])[C:5]2([CH3:14])[CH3:13]参加物
4
反応条件
- 温度
- 25 °C
実験手順
5-Bromo-7-fluoro-3,3-dimethyl-1,3-dihydro-indol-2-one (5.16 g, 20.0 mmol), 1-methyl-5-cyano-2-pyrroleboronic acid (5.4 g, 36 mmol), KF (3.83 g, 66 mmol), and Pd2(dba)3 monochloroform adduct (516 mg, 0.500 mmol) were added to a 200 mL round bottom flask under nitrogen. The flask was sealed and purged with nitrogen for 5 min. THF (50 mL) was added and the mixture was purged with nitrogen for an additional 5 min. A solution of tri-t-butylphosphine (10% wt in hexanes) (2.97 mL, 1.00 mmol) was added via syringe and the mixture was stirred vigorously at 25° C. for 5 h. The mixture was diluted with 250 mL of EtOAc, filtered through a plug of silica gel, washed through with 200 mL of EtOAc and concentrated to give a crude brown/black semi-solid. Purification by flash chromatography (20% acetone/hexane) afforded the title compound (4.5 g, 80%) as an off-white solid.