Trifluoroacetic acid → 2-[(2,4-Difluorophenyl){5-fluoro-7-[(methylsulfonyl)methyl]-1H-indol-3-yl}methyl]cyclopropane-carbonitrile
Reaction equation
[Cl-].[In+3].[Cl-].[Cl-].FC(F)(F)C(O)=O.[F:12][C:13]1[CH:14]=[C:15]2[C:19](=[C:20]([CH2:22][S:23]([CH3:26])(=[O:25])=[O:24])[CH:21]=1)[NH:18][CH:17]=[CH:16]2.[F:27][C:28]1[CH:33]=[C:32]([F:34])[CH:31]=[CH:30][C:29]=1[CH:35](O)[CH:36]1[CH2:38][CH:37]1[C:39]#[N:40]>ClCCl>[F:27][C:28]1[CH:33]=[C:32]([F:34])[CH:31]=[CH:30][C:29]=1[CH:35]([C:16]1[C:15]2[C:19](=[C:20]([CH2:22][S:23]([CH3:26])(=[O:24])=[O:25])[CH:21]=[C:13]([F:12])[CH:14]=2)[NH:18][CH:17]=1)[CH:36]1[CH2:38][CH:37]1[C:39]#[N:40]Participants
6
Reactant 4
Product 1
Reagents, catalysts & solvents 1
Procedure
96.9 mg (0.44 mmol) of indium(III) chloride and 0.06 ml (0.72 mmol) of trifluoroacetic acid were added to 113 mg (0.40 mmol) of the compound from Example 87A with a purity of 80% and 100 mg (0.48 mmol) of the compound from Example 162A under argon in 4 ml of dichloromethane, and the mixture was heated 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 69.0 mg (41% of theory) of the title compound as mixture of diastereomers.
Workup
- temperaturethe mixture was heated
- temperatureunder reflux for 1 h
- washwashed with water and saturated aqueous sodium bicarbonate solution
- dry with materialdried over magnesium sulfate
- filtrationfiltered
- concentrationconcentrated
- 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-390403948ced4c31ab6581bdfe72bc3f
- Source dataset
- uspto-grants-2011_11
- Patent number
- US08063234B2
Reaction notes
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