Trifluoroacetic acid → 2-[(2,4-Difluorophenyl){7-[(methylsulfonyl)methyl]-1H-indol-3-yl}methyl]cyclopropanecarbonitrile

HRID 561689Notes

Reaction equation

HRID 561689 reaction equation
[Cl-].[In+3].[Cl-].[Cl-].FC(F)(F)C(O)=O.[CH3:12][S:13]([CH2:16][C:17]1[CH:18]=[CH:19][CH:20]=[C:21]2[C:25]=1[NH:24][CH:23]=[CH:22]2)(=[O:15])=[O:14].[F:26][C:27]1[CH:32]=[C:31]([F:33])[CH:30]=[CH:29][C:28]=1[CH:34](O)[CH:35]1[CH2:37][CH:36]1[C:38]#[N:39]>ClCCl>[F:26][C:27]1[CH:32]=[C:31]([F:33])[CH:30]=[CH:29][C:28]=1[CH:34]([C:22]1[C:21]2[C:25](=[C:17]([CH2:16][S:13]([CH3:12])(=[O:15])=[O:14])[CH:18]=[CH:19][CH:20]=2)[NH:24][CH:23]=1)[CH:35]1[CH2:37][CH:36]1[C:38]#[N:39]

Participants

6

Reactant 4

HCID 6422Trifluoroacetic acidHCID 159675indium(III)chlorideHCID 583922947-[(Methylsulfonyl)methyl]-1H-indoleHCID 583924722-[(2,4-Difluorophenyl)(hydroxy)methyl]cyclopropanecarbonitrile

Product 1

HCID 583923582-[(2,4-Difluorophenyl){7-[(methylsulfonyl)methyl]-1H-indol-3-yl}methyl]cyclopropanecarbonitrile

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent2×

Procedure

116 mg (0.53 mmol) of indium(III) chloride and 0.07 ml (0.86 mmol) of trifluoroacetic acid were added to 100 mg (0.48 mmol) of the compound from Example 86A and 120 mg (0.57 mmol) of the compound from Example 162A under argon in 5 ml of dichloromethane, and the mixture was stirred under reflux for 1 h. It was diluted with dichloromethane and washed with water and saturated aqueous sodium bicarbonate solution, dried over magnesium sulfate, filtered and concentrated. The residue was purified by preparative HPLC (RP18 column; mobile phase: acetonitrile/water gradient with addition of 0.1% formic acid) to result in 29.0 mg (15% of theory) of the title compound as mixture of diastereomers.

Workup

  1. temperatureunder reflux for 1 h
  2. washwashed with water and saturated aqueous sodium bicarbonate solution
  3. dry with materialdried over magnesium sulfate
  4. filtrationfiltered
  5. concentrationconcentrated
  6. customThe residue was purified by preparative HPLC (RP18 column; mobile phase: acetonitrile/water gradient with addition of 0.1% formic acid)

Sources & evidence

ORD record
ord-72811bbb08db49e29e12d795ae74b210
Source dataset
uspto-grants-2011_11
Patent number
US08063234B2

Reaction notes

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