Tetrabutylammonium Fluoride → (1S,2S)-2-{4-[(R)-4-(4-Hydroxy-phenyl)-5-trifluoromethyl-indan-1-yloxy]-phenyl}-cyclopropanecarboxylic acid ethyl ester

HRID 471462Notes

Reaction equation

HRID 471462 reaction equation
[CH2:1]([O:3][C:4]([C@H:6]1[CH2:8][C@@H:7]1[C:9]1[CH:14]=[CH:13][C:12]([O:15][C@H:16]2[C:24]3[C:19](=[C:20]([C:29]4[CH:34]=[CH:33][C:32]([O:35][Si](C(C)(C)C)(C)C)=[CH:31][CH:30]=4)[C:21]([C:25]([F:28])([F:27])[F:26])=[CH:22][CH:23]=3)[CH2:18][CH2:17]2)=[CH:11][CH:10]=1)=[O:5])[CH3:2].[F-].C([N+](CCCC)(CCCC)CCCC)CCC>O1CCCC1.[Cl-].[NH4+]>[CH2:1]([O:3][C:4]([C@H:6]1[CH2:8][C@@H:7]1[C:9]1[CH:10]=[CH:11][C:12]([O:15][C@H:16]2[C:24]3[C:19](=[C:20]([C:29]4[CH:34]=[CH:33][C:32]([OH:35])=[CH:31][CH:30]=4)[C:21]([C:25]([F:26])([F:27])[F:28])=[CH:22][CH:23]=3)[CH2:18][CH2:17]2)=[CH:13][CH:14]=1)=[O:5])[CH3:2]

Participants

5

Reactant 2

HCID 2724141Tetrabutylammonium FluorideHCID 86703892(1S,2S)-2-(4-{(R)-4-[4-(tert-Butyl-dimethyl-silanyloxy)-phenyl]-5-trifluoromethyl-indan-1-yloxy}-phenyl)-cyclopropanecarboxylic acid ethyl ester

Product 1

HCID 86703894(1S,2S)-2-{4-[(R)-4-(4-Hydroxy-phenyl)-5-trifluoromethyl-indan-1-yloxy]-phenyl}-cyclopropanecarboxylic acid ethyl ester

Reagents, catalysts & solvents 2

HCID 8028TetrahydrofuranSolventHCID 25517Ammonium ChlorideSolvent

Procedure

(1S,2S)-2-(4-{(R)-4-[4-(tert-Butyl-dimethyl-silanyloxy)-phenyl]-5-trifluoromethyl-indan-1-yloxy}-phenyl)-cyclopropanecarboxylic acid ethyl ester (90 mg, 0.15 mmol is suspended in dry tetrahydrofuran (4.5 mL) and tetrabutylammonium fluoride (1 M in tetrahydrofuran, 0.3 mL, 0.3 mmol) is added. The mixture stirred for 2 hours then diluted with saturated ammonium chloride solution and extracted with ethyl acetate. The organic phase is dried and concentrated under vacuum. The residue is purified by flash chromatography (eluent: 0-20% EtOAc in cyclohexane) to give an impure product which is used directly in the next step.

Workup

  1. extractionextracted with ethyl acetate
  2. customThe organic phase is dried
  3. concentrationconcentrated under vacuum
  4. customThe residue is purified by flash chromatography (eluent: 0-20% EtOAc in cyclohexane)
  5. customto give an impure product which

Sources & evidence

ORD record
ord-42419a7678344328a3c0934643ee9468
Source dataset
uspto-grants-2014_01
Patent number
US08633182B2

Reaction notes

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