Diethyl Ether → 1-[1-benzyl-5-(2,2,2-trifluoro-1-triethylsilanyloxy-1-trifluoromethyl-ethyl)-1H-indol-2-yl]-ethanol

HRID 346837Notes

Reaction equation

HRID 346837 reaction equation
[CH2:1]([N:8]1[C:16]2[C:11](=[CH:12][C:13]([C:17]([O:26][Si:27]([CH2:32][CH3:33])([CH2:30][CH3:31])[CH2:28][CH3:29])([C:22]([F:25])([F:24])[F:23])[C:18]([F:21])([F:20])[F:19])=[CH:14][CH:15]=2)[CH:10]=[C:9]1[CH:34]=[O:35])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[CH3:36][Mg]Br.[NH4+].[Cl-].CCOCC>C1COCC1>[CH2:1]([N:8]1[C:16]2[C:11](=[CH:12][C:13]([C:17]([O:26][Si:27]([CH2:32][CH3:33])([CH2:28][CH3:29])[CH2:30][CH3:31])([C:18]([F:19])([F:20])[F:21])[C:22]([F:23])([F:24])[F:25])=[CH:14][CH:15]=2)[CH:10]=[C:9]1[CH:34]([OH:35])[CH3:36])[C:2]1[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=1

Participants

6

Reactant 4

HCID 3283Diethyl EtherHCID 25517Ammonium ChlorideHCID 210821981-benzyl-5-(2,2,2-trifluoro-1-triethylsilanyloxy-1-trifluoromethyl-ethyl)-1H-indole-2-carbaldehydeHCID 178418573HCID 178418573, compound

Product 1

HCID 210821941-[1-benzyl-5-(2,2,2-trifluoro-1-triethylsilanyloxy-1-trifluoromethyl-ethyl)-1H-indol-2-yl]-ethanolYield 105.7%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

To a solution of 0.11 g (0.21 mmol) of 1-benzyl-5-(2,2,2-trifluoro-1-triethylsilanyloxy-1-trifluoromethyl-ethyl)-1H-indole-2-carbaldehyde in 3 mL of THF were added 0.14 mL (0.42 mmol) of methyl magnesium bromide dropwise at 0° C. under an argon stream. The mixture was stirred at RT for 1.5 h and poured into a mixture of a saturated aqueous solution of NH4Cl and Et2O. The phases were separated and the aqueous one was extracted with Et2O. The combined organic phases were dried over Na2SO4 and evaporated to yield 0.118 g (quantitative) of crude 1-[1-benzyl-5-(2,2,2-trifluoro-1-triethylsilanyloxy-1-trifluoromethyl-ethyl)-1H-indol-2-yl]-ethanol, which was dissolved in 2 mL of THF and treated with 0.43 mL (0.43 mmol) of a 1M TBAF-solution in THF, stirred for one hour and then poured into a mixture of a saturated aqueous solution of NH4Cl and Et2O. The phases were separated and the aqueous one was extracted with Et2O. The combined organic phases were dried over Na2SO4 and evaporated to yield 0.066 g (74%) of 2-[1-benzyl-2-(1-hydroxy-ethyl)-1H-indol-5-yl]-1,1,1,3,3,3-hexafluoro-propan-2-ol, yellow solid, MS: 418 (M−H)−.

Workup

  1. customThe phases were separated
  2. extractionthe aqueous one was extracted with Et2O
  3. dry with materialThe combined organic phases were dried over Na2SO4
  4. customevaporated

Sources & evidence

ORD record
ord-3e08765357414d6489a44fe938cfebe9
Source dataset
uspto-grants-2007_02
Patent number
US07173048B2

Reaction notes

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