HCID 15544164, compound → HCID 86671730, compound

HRID 2178706Notes

Reaction equation

HRID 2178706 reaction equation
CC(C)([O-])C.[K+].[OH:7][CH2:8][C@@H:9]([N:11]1[CH2:16][CH2:15][N:14]2[C:17](=[O:27])[C:18]([N:21]3[CH:25]=[C:24]([CH3:26])[N:23]=[CH:22]3)=[CH:19][CH:20]=[C:13]2[C:12]1=[O:28])[CH3:10].F[C:30]1[CH:35]=[CH:34][C:33]([N+:36]([O-:38])=[O:37])=[CH:32][C:31]=1[S:39]([F:44])([F:43])([F:42])([F:41])[F:40]>O1CCCC1.O>[CH3:26][C:24]1[N:23]=[CH:22][N:21]([C:18]2[C:17](=[O:27])[N:14]3[CH2:15][CH2:16][N:11]([C@@H:9]([CH3:10])[CH2:8][O:7][C:30]4[CH:35]=[CH:34][C:33]([N+:36]([O-:38])=[O:37])=[CH:32][C:31]=4[S:39]([F:42])([F:43])([F:44])([F:40])[F:41])[C:12](=[O:28])[C:13]3=[CH:20][CH:19]=2)[CH:25]=1

Participants

6

Reactant 3

HCID 15544164HCID 15544164, compoundHCID 23665647Potassium tert-butoxideHCID 68379737HCID 68379737, compound

Product 1

HCID 86671730HCID 86671730, compound

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 8028TetrahydrofuranSolvent3×

Procedure

A solution of potassium tert-butoxide in tetrahydrofuran (1 M, 1.97 mL, 1.97 mmol) was added to a slurry of 2-[(2S)-1-hydroxypropan-2-yl]-7-(4-methyl-1H-imidazol-1-yl)-3,4-dihydro-2H-pyrido[1,2-a]pyrazine-1,6-dione (C54) (541 mg, 1.79 mmol) in tetrahydrofuran (6 mL), and the mixture was allowed to stir for 10 minutes. A solution of 1-fluoro-4-nitro-2-(pentafluoro-λ6-sulfanyl)benzene (P15) (478 mg, 1.79 mmol) in tetrahydrofuran (4 mL) was added, and the reaction mixture was stirred at room temperature for 18 hours. At that point, it was diluted with water and extracted with ethyl acetate (3×50 mL). The combined organic layers were washed with saturated aqueous sodium chloride solution, dried over magnesium sulfate, filtered, and concentrated in vacuo. Purification via silica gel chromatography (Eluents: ethyl acetate, then 10% methanol in ethyl acetate) afforded the product as a yellow foam. Yield: 695 mg, 1.26 mmol, 70%. LCMS m/z 550.2 (M+1). 1H NMR (400 MHz, CDCl3) δ 1.53 (d, J=7.1 Hz, 3H), 2.34 (d, J=1.0 Hz, 3H), 3.73-3.85 (m, 2H), 4.30-4.47 (m, 4H), 4.99-5.08 (m, 1H), 7.16-7.21 (m, 2H), 7.28 (d, J=7.7 Hz, 1H), 7.52 (d, J=7.7 Hz, 1H), 8.40 (dd, J=9.2, 2.7 Hz, 1H), 8.44 (br s, 1H), 8.71 (d, J=2.6 Hz, 1H).

Workup

  1. stirringthe reaction mixture was stirred at room temperature for 18 hours
  2. extractionextracted with ethyl acetate (3×50 mL)
  3. washThe combined organic layers were washed with saturated aqueous sodium chloride solution
  4. dry with materialdried over magnesium sulfate
  5. filtrationfiltered
  6. concentrationconcentrated in vacuo
  7. customPurification via silica gel chromatography (Eluents

Sources & evidence

ORD record
ord-c862c129816148f7bcc8a48474c32a23
Source dataset
uspto-grants-2015_06
Patent number
US09067934B2

Reaction notes

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