(3S)-3-aminopyrrolidin-2-one → (S)-5-(2,4-difluorophenoxy)-1-isobutyl-N-(2-oxopyrrolidin-3-yl)-1H-indazole-6-carboxamide

HRID 912448Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 912448
[F:1][C:2]1[CH:31]=[C:30]([F:32])[CH:29]=[CH:28][C:3]=1[O:4][C:5]1[CH:6]=[C:7]2[C:11](=[CH:12][C:13]=1[C:14](ON1C(=O)CCC1=O)=[O:15])[N:10]([CH2:24][CH:25]([CH3:27])[CH3:26])[N:9]=[CH:8]2.[NH2:33][C@H:34]1[CH2:38][CH2:37][NH:36][C:35]1=[O:39]>ClCCl.C(OCC)(=O)C>[F:1][C:2]1[CH:31]=[C:30]([F:32])[CH:29]=[CH:28][C:3]=1[O:4][C:5]1[CH:6]=[C:7]2[C:11](=[CH:12][C:13]=1[C:14]([NH:33][C@H:34]1[CH2:38][CH2:37][NH:36][C:35]1=[O:39])=[O:15])[N:10]([CH2:24][CH:25]([CH3:26])[CH3:27])[N:9]=[CH:8]2

Komponenten

5

Edukt 2

HCID 12430456(3S)-3-aminopyrrolidin-2-oneHCID 426324812,5-dioxopyrrolidin-1-yl 5-(2,4-difluorophenoxy)-1-isobutyl-1H-indazole-6-carboxylate

Produkt 1

HCID 17751071(S)-5-(2,4-difluorophenoxy)-1-isobutyl-N-(2-oxopyrrolidin-3-yl)-1H-indazole-6-carboxamideAusbeute 77 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 6344DichloromethaneLösungsmittelHCID 8857Ethyl AcetateLösungsmittel

Versuchsvorschrift

To a solution of 2,5-dioxopyrrolidin-1-yl 5-(2,4-difluorophenoxy)-1-isobutyl-1H-indazole-6-carboxylate (700 mg, 1.58 mmol) in dichloromethane (5 mL) was added (S)-3-aminopyrrolidin-2-one (prepared according to Example 2, 205 mg, 2.05 mmol) and the reaction was allowed to stir overnight at ambient temperature. The reaction mixture was diluted with ethyl acetate and washed with 1M hydrochloric acid, 1M sodium hydroxide, saturated sodium bicarbonate, and saturated sodium chloride. The organic layer was dried over anhydrous sodium sulfate, filtered, and concentrated. The residue was purified by column chromatography on a silica gel column, eluting with a gradient of 25-100% acetone/hexanes to yield (S)-5-(2,4-difluorophenoxy)-1-isobutyl-N-(2-oxopyrrolidin-3-yl)-1H-indazole-6-carboxamide (Ia) (520 mg, 77%). Mass spec: 429 (M+1). 1H NMR (CDCl3) δ 8.37 (s, 1H), 8.26 (d, 1H), 7.87 (s, 1H), 7.15 (m, 1H), 7.03 (s, 1H), 7.00 (m, 1H), 6.91 (m, 1H), 6.03 (br, 1H), 4.59 (ddd, 1H), 4.22 (d, 2H), 3.46 (m, 2H), 2.87 (m, 1H), 2.36 (m, 1H), 2.10 (m, 1H), 0.92 (d, 6H).

Aufarbeitung

  1. washwashed with 1M hydrochloric acid, 1M sodium hydroxide, saturated sodium bicarbonate, and saturated sodium chloride
  2. dry with materialThe organic layer was dried over anhydrous sodium sulfate
  3. filtrationfiltered
  4. concentrationconcentrated
  5. customThe residue was purified by column chromatography on a silica gel column
  6. washeluting with a gradient of 25-100% acetone/hexanes

Quellen und Nachweise

ORD-Eintrag
ord-c1ea315769384af49978144ba9654228
Quelldatensatz
uspto-grants-2011_09
Patentnummer
US08026233B2

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