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Water → (R)-3-[4-(3-Amino-benzo[d]isoxazol-6-yl)-2,6-dichloro-benzyl]-1-(4-hydroxy-piperidin-1-yl)-pyrrolidin-2-one

HRID 1692102
Notes
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Reaction equation

HRID 1692102 reaction equation
O.C(O)(C(F)(F)F)=O.[NH2:9][C:10]1[C:14]2[CH:15]=[CH:16][C:17]([C:19]3[CH:48]=[C:47]([Cl:49])[C:22]([CH2:23][C@@H:24]4[CH2:28][CH2:27][N:26]([N:29]5[CH2:34][CH2:33][CH:32]([O:35][Si](C(C)C)(C(C)C)C(C)C)[CH2:31][CH2:30]5)[C:25]4=[O:46])=[C:21]([Cl:50])[CH:20]=3)=[CH:18][C:13]=2[O:12][N:11]=1.C(OCC)(=O)C>C1COCC1>[NH2:9][C:10]1[C:14]2[CH:15]=[CH:16][C:17]([C:19]3[CH:48]=[C:47]([Cl:49])[C:22]([CH2:23][C@@H:24]4[CH2:28][CH2:27][N:26]([N:29]5[CH2:34][CH2:33][CH:32]([OH:35])[CH2:31][CH2:30]5)[C:25]4=[O:46])=[C:21]([Cl:50])[CH:20]=3)=[CH:18][C:13]=2[O:12][N:11]=1
ParticipantsProcedureWorkupSources & evidenceReaction notes

Participants

6

Reactant 4

HCID 962WaterHCID 6422Trifluoroacetic acidHCID 8857Ethyl AcetateHCID 66905014(R)-3-[4-(3-Amino-benzo[d]isoxazol-6-yl)-2,6-dichloro-benzyl]-1-(4-triisopropylsilanyloxy-piperidin-1-yl)-pyrrolidin-2-one

Product 1

HCID 66905316(R)-3-[4-(3-Amino-benzo[d]isoxazol-6-yl)-2,6-dichloro-benzyl]-1-(4-hydroxy-piperidin-1-yl)-pyrrolidin-2-one
Yield 87%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

Add water (3 mL) and TFA (1 mL) to (R)-3-[4-(3-amino-benzo[d]isoxazol-6-yl)-2,6-dichloro-benzyl]-1-(4-triisopropylsilanyloxy-piperidin-1-yl)-pyrrolidin-2-one (0.095 g) in THF (3 mL). Stir the mixture at room temperature for 5 hours. Dilute the reaction with ethyl acetate, wash with sodium bicarbonate (sat. solution), separate the organic layer, dry over sodium sulfate, filter and concentrate. Purify the residue on silica gel column by using ethyl acetate first, then switch to 5% methanol in dichloromethane to afford 0.062 g (87%) of the desired product as white solid. MS (m/z): 475 (M+).

Workup

  1. additionDilute
  2. washwash with sodium bicarbonate (sat. solution)
  3. customseparate the organic layer
  4. dry with materialdry over sodium sulfate
  5. filtrationfilter
  6. concentrationconcentrate
  7. customPurify the residue on silica gel column

Sources & evidence

ORD record
ord-6c358fdb9992412088210ea9c828186b
Source dataset
uspto-grants-2012_04
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US08153807B2

Reaction notes

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On this pageParticipantsProcedureWorkupSources & evidenceReaction notes