Trifluoroacetic acid → (R)-4-((R)-1-((5-bromo-1-cyclopropyl-1 h-benzo[d]imidazol-7-yl)oxy)ethyl)pyrrolidin-2-one
反応式
[Br:1][C:2]1[CH:13]=[C:12]([O:14][C@@H:15]([C@H:17]2[CH2:21][N:20]([C@@H](C3C=CC(OC)=CC=3)C)[C:19](=[O:32])[CH2:18]2)[CH3:16])[C:5]2[N:6]([CH:9]3[CH2:11][CH2:10]3)[CH:7]=[N:8][C:4]=2[CH:3]=1.C(O)(C(F)(F)F)=O>>[Br:1][C:2]1[CH:13]=[C:12]([O:14][C@@H:15]([C@H:17]2[CH2:21][NH:20][C:19](=[O:32])[CH2:18]2)[CH3:16])[C:5]2[N:6]([CH:9]3[CH2:10][CH2:11]3)[CH:7]=[N:8][C:4]=2[CH:3]=1参加物
反応条件
- 温度
- 70 °C
実験手順
(R)-4-((R)-1-((5-bromo-1-cyclopropyl-1H-benzo[d]imidazol-7-yl)oxy)ethyl)-1-((R)-1-(4-methoxyphenyl)ethyl)pyrrolidin-2-one 2.74 (2.09 g, 4.19 mmol) was dissolved in TFA (42 mL, 550 mmol). The resulting solution was heated to 70° C. and was stirred for 19 h. The reaction mixture was concentrated and partitioned between EtOAc (100 mL) and saturated aqueous NaHCO3 (75 mL). The phases were separated, and the aqueous phase was extracted with EtOAc (2×75 mL). The combined organic phase was dried over Na—2SO4, filtered, and concentrated, and the crude concentrate was purified by silica gel chromatography (0-20% MeOH in DCM) to provide (R)-4-((R)-1-((5-bromo-1-cyclopropyl-1H-benzo[d]imidazol-7-yl)oxy)ethyl)pyrrolidin-2-one (2.75). LCMS-ESI+ (m/z): [M+H]+ calcd for C16H19BrN3O2: 364.07; found: 364.05.
後処理
- concentrationThe reaction mixture was concentrated
- custompartitioned between EtOAc (100 mL) and saturated aqueous NaHCO3 (75 mL)
- customThe phases were separated
- extractionthe aqueous phase was extracted with EtOAc (2×75 mL)
- dry with materialThe combined organic phase was dried over Na—2SO4
- filtrationfiltered
- concentrationconcentrated
- concentrationthe crude concentrate
- customwas purified by silica gel chromatography (0-20% MeOH in DCM)
出典と根拠
- ORDレコード
- ord-06b6df9332254e91997d2db15de0cce0
- 出典データセット
- uspto-grants-2016_06
- 特許番号
- US09376441B2
反応ノート
読み込み中…