Chlorotriethylsilane → 1-benzyl-5-(2,2,2-trifluoro-1-triethylsilanyloxy-1-trifluoromethyl-ethyl)-1H-indole-2-carbaldehyde

HRID 346836Notes

Reaction equation

HRID 346836 reaction equation
[CH2:1]([N:8]1[C:16]2[C:11](=[CH:12][C:13]([C:17]([OH:26])([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:27]=[O:28])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.C1CCN2C(=NCCC2)CC1.[Si:40](Cl)([CH2:45][CH3:46])([CH2:43][CH3:44])[CH2:41][CH3:42].[NH4+].[Cl-]>CN(C=O)C.CCOCC>[CH2:1]([N:8]1[C:16]2[C:11](=[CH:12][C:13]([C:17]([O:26][Si:40]([CH2:45][CH3:46])([CH2:43][CH3:44])[CH2:41][CH3:42])([C:22]([F:25])([F:23])[F:24])[C:18]([F:19])([F:20])[F:21])=[CH:14][CH:15]=2)[CH:10]=[C:9]1[CH:27]=[O:28])[C:2]1[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=1

Participants

7

Reactant 4

HCID 13819ChlorotriethylsilaneHCID 25517Ammonium ChlorideHCID 811841,8-Diazabicyclo(5.4.0)undec-7-eneHCID 115458181-benzyl-5-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethyl-ethyl)-1H-indole-2-carbaldehyde

Product 1

HCID 210821981-benzyl-5-(2,2,2-trifluoro-1-triethylsilanyloxy-1-trifluoromethyl-ethyl)-1H-indole-2-carbaldehydeYield 92%

Reagents, catalysts & solvents 2

HCID 3283Diethyl EtherSolventHCID 6228DimethylformamideSolvent

Procedure

To a solution of 0.33 g (0.82 mmol) of 1-benzyl-5-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethyl-ethyl)-1H-indole-2-carbaldehyde (example 23) in 3 mL of DMF at 0° C. were added 0.15 mL (0.99 mmol) of DBU, followed by 0.17 mL (0.99 mmol) of TESCl. The mixture was stirred at RT overnight 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 0.389 g (92%) of 1-benzyl-5-(2,2,2-trifluoro-1-triethylsilanyloxy-1-trifluoromethyl-ethyl)-1H-indole-2-carbaldehyde, MS: 516 (MH+).

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-229be14a590a402094c3d21953dfb844
Source dataset
uspto-grants-2007_02
Patent number
US07173048B2

Reaction notes

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