Hydrochloric Acid → (3R)-3-{2-[3-chloro-4-(methylsulfonyl)phenyl]-2-(5-(pyrazin-2-yl)-1H-pyrrol-2-yl)ethyl}cyclopentanone

HRID 1882083ノート

反応式

HRID 1882083 の反応式
[Cl:1][C:2]1[CH:3]=[C:4]([CH:12]([C:35]2[NH:39][C:38]([C:40]3[CH:45]=[N:44][CH:43]=[CH:42][N:41]=3)=[CH:37][CH:36]=2)[CH2:13][C@H:14]2[CH2:34][CH2:33][C:16]3(O[C@H](C4C=CC=CC=4)[C@@H](C4C=CC=CC=4)[O:17]3)[CH2:15]2)[CH:5]=[CH:6][C:7]=1[S:8]([CH3:11])(=[O:10])=[O:9].Cl.C(=O)([O-])O.[Na+]>O1CCCC1.C(OCC)(=O)C>[Cl:1][C:2]1[CH:3]=[C:4]([CH:12]([C:35]2[NH:39][C:38]([C:40]3[CH:45]=[N:44][CH:43]=[CH:42][N:41]=3)=[CH:37][CH:36]=2)[CH2:13][C@H:14]2[CH2:34][CH2:33][C:16](=[O:17])[CH2:15]2)[CH:5]=[CH:6][C:7]=1[S:8]([CH3:11])(=[O:9])=[O:10]

参加物

6

反応物 3

HCID 313Hydrochloric AcidHCID 516892Sodium BicarbonateHCID 593314082-(5-{1-[3-chloro-4-(methylsulfonyl)phenyl]-2-[(2R,3R,7R)-2,3-diphenyl-1,4-dioxaspiro[4.4]non-7-yl]ethyl}-1H-pyrrol-2-yl)pyrazine

生成物 1

HCID 59331370(3R)-3-{2-[3-chloro-4-(methylsulfonyl)phenyl]-2-(5-(pyrazin-2-yl)-1H-pyrrol-2-yl)ethyl}cyclopentanone収率 68.4%

試薬・触媒・溶媒 2

HCID 8028Tetrahydrofuran溶媒HCID 8857Ethyl Acetate溶媒

反応条件

温度
50 °C

実験手順

To a solution of 2-(5-{1-[3-chloro-4-(methylsulfonyl)phenyl]-2-[(2R,3R,7R)-2,3-diphenyl-1,4-dioxaspiro[4.4]non-7-yl]ethyl}-1H-pyrrol-2-yl)pyrazine (94.3 mg) in tetrahydrofuran (1 mL) was added 1M hydrochloric acid (1 mL), and the mixture was stirred at 50° C. for 24 hr. After cooling to room temperature, the mixture was neutralized with saturated aqueous sodium hydrogen carbonate solution. The reaction mixture was diluted with ethyl acetate and washed with water. The ethyl acetate layer was dried (MgSO4) and concentrated. The residue was subjected to silica gel column chromatography, and the title compound (44.7 mg, yield 68%) was obtained as a white amorphous solid from a fraction eluted with ethyl acetate-hexane (9:1, volume ratio). MS: 444 (MH+).

後処理

  1. temperatureAfter cooling to room temperature
  2. washwashed with water
  3. dry with materialThe ethyl acetate layer was dried (MgSO4)
  4. concentrationconcentrated

出典と根拠

ORDレコード
ord-c60a61ea01f64841959142a8402d5784
出典データセット
uspto-grants-2012_11
特許番号
US08318746B2

反応ノート

読み込み中…