Acetic Acid → HCID 67358307, compound

HRID 245498Notes

Reaction equation

HRID 245498 reaction equation
[Si]([O:18][CH2:19][C:20]1[C:21]([N:35]2[CH2:40][C@H:39]([CH3:41])[O:38][C@H:37]([CH3:42])[CH2:36]2)=[C:22]([F:34])[C:23]2[O:27][N:26]=[C:25]([C:28]([O:30][CH2:31][CH3:32])=[O:29])[C:24]=2[CH:33]=1)(C(C)(C)C)(C1C=CC=CC=1)C1C=CC=CC=1.C(O)(=O)C.CCCC[N+](CCCC)(CCCC)CCCC.[F-]>C1COCC1.O>[CH3:41][C@@H:39]1[CH2:40][N:35]([C:21]2[C:20]([CH2:19][OH:18])=[CH:33][C:24]3[C:25]([C:28]([O:30][CH2:31][CH3:32])=[O:29])=[N:26][O:27][C:23]=3[C:22]=2[F:34])[CH2:36][C@H:37]([CH3:42])[O:38]1

Participants

6

Reactant 3

HCID 176Acetic AcidHCID 2724141Tetrabutylammonium FluorideHCID 67357675ethyl 5-((tert-butyldiphenylsilyloxy)methyl)-6-((2R,6S)-2,6-dimethylmorpholino)-7-fluorobenzo[d]isoxazole-3-carboxylate2×

Product 1

HCID 67358307HCID 67358307, compound

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 8028TetrahydrofuranSolvent

Procedure

Ethyl 5-((tert-butyldiphenylsilyloxy)methyl)-6-((2R,6S)-2,6-dimethylmorpholino)-7-fluorobenzo[d]isoxazole-3-carboxylate (Intermediate 204, 693 mg, 1.17 mmol) was dissolved in THF (3 ml) along with acetic acid (0.134 ml, 2.35 mmol). TBAF (1N in THF, 1.290 ml, 1.29 mmol) was added and the reaction was stirred at room temperature for 30 minutes. The reaction was diluted with water and extracted 2× with ethyl acetate. The organic layers were combined, washed with brine, dried over MgSO4 and concentrated. The residue was purified by silica gel column chromatography to give the title compound.

Workup

  1. extractionextracted 2× with ethyl acetate
  2. washwashed with brine
  3. dry with materialdried over MgSO4
  4. concentrationconcentrated
  5. customThe residue was purified by silica gel column chromatography

Sources & evidence

ORD record
ord-965ae404578347b7a59c21214d4852a6
Source dataset
uspto-grants-2014_02
Patent number
US08658641B2

Reaction notes

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