Diisopropylethylamine → (S)-tert-butyl 5-((S)-1-(4-bromo-3-fluorophenyl)-2-(4-((5R,7R)-7-hydroxy-5-methyl-6,7-dihydro-5H-cyclopenta[d]pyrimidin-4-yl)piperazin-1-yl)-2-oxoethyl)-2,2-dimethylpyrrolidine-1-carboxylate

HRID 1480587Notes

Reaction equation

HRID 1480587 reaction equation
C(N(C(C)C)C(C)C)C.[Br:10][C:11]1[CH:16]=[CH:15][C:14]([C@@H:17]([C@@H:21]2[CH2:25][CH2:24][C:23]([CH3:27])([CH3:26])[N:22]2[C:28]([O:30][C:31]([CH3:34])([CH3:33])[CH3:32])=[O:29])[C:18](O)=[O:19])=[CH:13][C:12]=1[F:35].Cl.Cl.[CH3:38][C@H:39]1[C:47]2[C:46]([N:48]3[CH2:53][CH2:52][NH:51][CH2:50][CH2:49]3)=[N:45][CH:44]=[N:43][C:42]=2[C@H:41]([OH:54])[CH2:40]1.CN(C(ON1N=NC2C=CC=NC1=2)=[N+](C)C)C.F[P-](F)(F)(F)(F)F>C(Cl)Cl>[Br:10][C:11]1[CH:16]=[CH:15][C:14]([C@@H:17]([C@H:21]2[N:22]([C:28]([O:30][C:31]([CH3:34])([CH3:32])[CH3:33])=[O:29])[C:23]([CH3:26])([CH3:27])[CH2:24][CH2:25]2)[C:18]([N:51]2[CH2:52][CH2:53][N:48]([C:46]3[C:47]4[C@H:39]([CH3:38])[CH2:40][C@@H:41]([OH:54])[C:42]=4[N:43]=[CH:44][N:45]=3)[CH2:49][CH2:50]2)=[O:19])=[CH:13][C:12]=1[F:35]

Participants

6

Reactant 4

HCID 81531DiisopropylethylamineHCID 9886157Methanaminium, N-((dimethylamino)(3H-1,2,3-triazolo(4,5-b)pyridin-3-yloxy)methylene)-N-methyl-, hexafluorophosphate(1-) (1:1)HCID 66618034(5R,7R)-5-methyl-4-(piperazin-1-yl)-6,7-dihydro-5H-cyclopenta[d]pyrimidin-7-ol dihydrochlorideHCID 66845808(S)-2-(4-bromo-3-fluorophenyl)-2-((S)-1-(tert-butoxycarbonyl)-5,5-dimethylpyrrolidin-2-yl)acetic acid

Product 1

HCID 66846078(S)-tert-butyl 5-((S)-1-(4-bromo-3-fluorophenyl)-2-(4-((5R,7R)-7-hydroxy-5-methyl-6,7-dihydro-5H-cyclopenta[d]pyrimidin-4-yl)piperazin-1-yl)-2-oxoethyl)-2,2-dimethylpyrrolidine-1-carboxylateYield 23%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

N-Ethyl-N-isopropylpropan-2-amine (0.045 mL, 0.26 mmol) was added to a solution of (S)-2-(4-bromo-3-fluorophenyl)-2-((S)-1-(tert-butoxycarbonyl)-5,5-dimethylpyrrolidin-2-yl)acetic acid (0.035 g, 0.081 mmol; prepared analogously to that described in Example B), (5R,7R)-5-methyl-4-(piperazin-1-yl)-6,7-dihydro-5H-cyclopenta[d]pyrimidin-7-ol dihydrochloride (0.025 g, 0.081 mmol; see Example 3, Step 12), and 2-(3H-[1,2,3]triazolo[4,5-b]pyridin-3-yl)-1,1,3,3-tetramethylisouronium hexafluorophosphate(V) (0.031 g, 0.081 mmol) in DCM (5 mL). The reaction was stirred overnight at room temperature. The reaction was then quenched with H2O, washed with H2O (3×30 mL), dried with MgSO4, filtered and concentrated. The resulting residue was purified by flash chromatography to give (S)-tert-butyl 5-((S)-1-(4-bromo-3-fluorophenyl)-2-(4-((5R,7R)-7-hydroxy-5-methyl-6,7-dihydro-5H-cyclopenta[d]pyrimidin-4-yl)piperazin-1-yl)-2-oxoethyl)-2,2-dimethylpyrrolidine-1-carboxylate (23% yield). LCMS (APCI+) 648.2 m/z [M+H]+; Retention time=4.28 minutes.

Workup

  1. customprepared analogously to
  2. customThe reaction was then quenched with H2O
  3. washwashed with H2O (3×30 mL)
  4. dry with materialdried with MgSO4
  5. filtrationfiltered
  6. concentrationconcentrated
  7. customThe resulting residue was purified by flash chromatography

Sources & evidence

ORD record
ord-75a592929ae44cf8a08703ef9c269b87
Source dataset
uspto-grants-2016_08
Patent number
US09409886B2

Reaction notes

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