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

HRID 912466

Reaction equation

HRID 912466 reaction equation
O=C1CCC(=O)N1[C:8]1[C:16]2[C:11](=[CH:12][C:13]([C:26]([O-:28])=O)=[C:14]([O:17][C:18]3[CH:23]=[CH:22][C:21]([F:24])=[CH:20][C:19]=3[F:25])[CH:15]=2)[N:10]([CH2:29][C:30]([F:33])([CH3:32])[CH3:31])[N:9]=1.[NH2:34][C@H:35]1[CH2:39][CH2:38][NH:37][C:36]1=[O:40]>ClCCl.C(OCC)(=O)C>[F:25][C:19]1[CH:20]=[C:21]([F:24])[CH:22]=[CH:23][C:18]=1[O:17][C:14]1[CH:15]=[C:16]2[C:11](=[CH:12][C:13]=1[C:26]([NH:34][C@H:35]1[CH2:39][CH2:38][NH:37][C:36]1=[O:40])=[O:28])[N:10]([CH2:29][C:30]([F:33])([CH3:32])[CH3:31])[N:9]=[CH:8]2

Participants

5

Reactant 2

HCID 12430456(3S)-3-aminopyrrolidin-2-oneHCID 866310522,5-dioxopyrrolidin-1-yl-5-(2,4-difluorophenoxy)-1-(2-fluoro-2-methylpropyl)-1H-indazole-6-carboxylate

Product 1

HCID 24865103(S)-5-(2,4-difluorophenoxy)-1-(2-fluoro-2-methylpropyl)-N-(2-oxopyrrolidin-3-yl)-1H-indazole-6-carboxamideYield 1,032.3%

Reagents, catalysts & solvents 2

HCID 6344DichloromethaneSolventHCID 8857Ethyl AcetateSolvent

Procedure

To a solution of 2,5-dioxopyrrolidin-1-yl-5-(2,4-difluorophenoxy)-1-(2-fluoro-2-methylpropyl)-1H-indazole-6-carboxylate (prepared according to Example 26; 100 mg, 0.217 mmol) in dichloromethane (1 mL) was added (S)-3-aminopyrrolidin-2-one (4a) 521 mg, 4.56 mmol), and the reaction mixture 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 50% acetone/hexanes to yield (S)-5-(2,4-difluorophenoxy)-1-(2-fluoro-2-methylpropyl)-N-(2-oxopyrrolidin-3-yl)-1H-indazole-6-carboxamide (Ik) (1.00 g, 99%). Mass spec: 447 (M+1). 1H NMR (CDCl3) δ 8.42 (s, 1H), 8.21 (br, 1H), 7.15 (m, 1H), 7.03 (s, 1H), 7.01 (m, 1H), 6.91 (m, 1H), 6.59 (br, 1H), 4.58 (m, 1H), 4.55 (d, 2H), 3.43 (m, 2H), 2.84 (m, 1H), 2.06 (m, 1H), 1.40 (d, 3H), 1.39 (d, 3H).

Workup

  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 50% acetone/hexanes

Sources & evidence

ORD record
ord-63863af0cc644b8ca06c3d955ebe43e7
Source dataset
uspto-grants-2011_09
Patent number
US08026233B2

Linked notes

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