Ethyl Acetate → (S)-methyl 1-cyclopentyl-5-fluoro-6-methyl-2-(5-(N-(1,1,1-trifluoropropan-2-yl)sulfamoyl)pyridin-2-yl)-1H-indole-3-carboxylate

HRID 1028022Notes

Reaction equation

HRID 1028022 reaction equation
[CH:1]1([N:6]2[C:14]3[C:9](=[CH:10][C:11]([F:16])=[C:12]([CH3:15])[CH:13]=3)[C:8]([C:17]([O:19][CH3:20])=[O:18])=[C:7]2B(O)O)[CH2:5][CH2:4][CH2:3][CH2:2]1.Cl[C:25]1[N:30]=[CH:29][C:28]([S:31]([NH:34][C@@H:35]([CH3:40])[C:36]([F:39])([F:38])[F:37])(=[O:33])=[O:32])=[CH:27][CH:26]=1.C([O-])([O-])=O.[K+].[K+].C(OCC)(=O)C>C(#N)C>[CH:1]1([N:6]2[C:14]3[C:9](=[CH:10][C:11]([F:16])=[C:12]([CH3:15])[CH:13]=3)[C:8]([C:17]([O:19][CH3:20])=[O:18])=[C:7]2[C:25]2[CH:26]=[CH:27][C:28]([S:31](=[O:33])(=[O:32])[NH:34][C@@H:35]([CH3:40])[C:36]([F:38])([F:37])[F:39])=[CH:29][N:30]=2)[CH2:5][CH2:4][CH2:3][CH2:2]1

Participants

6

Reactant 4

HCID 8857Ethyl AcetateHCID 11430Potassium CarbonateHCID 667309151-cyclopentyl-5-fluoro-3-(methoxycarbonyl)-6-methyl-1H-indol-2-ylboronic acidHCID 86665920(S)-6-chloro-N-(1,1,1-trifluoropropan-2-yl)pyridine-3-sulfonamide

Product 1

HCID 66730643(S)-methyl 1-cyclopentyl-5-fluoro-6-methyl-2-(5-(N-(1,1,1-trifluoropropan-2-yl)sulfamoyl)pyridin-2-yl)-1H-indole-3-carboxylateYield 54%

Reagents, catalysts & solvents 1

HCID 6342AcetonitrileSolvent

Procedure

A mixture of 1-cyclopentyl-5-fluoro-3-(methoxycarbonyl)-6-methyl-1H-indol-2-ylboronic acid (2.2 mmol), (S)-6-chloro-N-(1,1,1-trifluoropropan-2-yl)pyridine-3-sulfonamide (0.53 g, 1.83 mmol), PdCl2dppf (0.15 g, 0.183 mmol), aq. K2CO3 (2.0 M, 3.6 mL, 7.2 mmol) in acetonitrile (10 mL) was stirred at room temperature over the weekend. The mixture was treated with ethyl acetate and washed with water and brine and then concentrated. The residue was purified by flash chromatography with 0-15% ethyl acetate in CH2Cl2 to provide (S)-methyl 1-cyclopentyl-5-fluoro-6-methyl-2-(5-(N-(1,1,1-trifluoropropan-2-yl)sulfamoyl)pyridin-2-yl)-1H-indole-3-carboxylate (0.52 g, 54%). MS m/z 528.2 M+H+; 1H NMR (500 MHz, CDCl3): δ 9.21 (1H, d, J=1.8 Hz), 8.25 (1H, dd, J=8.2 Hz, J=2.2 Hz), 7.87 (1H, d, J=10.6 Hz), 7.73 (1H, d, J=8.2 Hz), 7.27 (1H, d, J=5.2 Hz), 5.09 (1H, d, J=9.6 Hz), 4.39-4.31 (1H, m), 4.17-4.10 (1H, m), 3.70 (3H, s), 2.44 (3H, d, J=1.8 Hz), 2.41-2.36 (2H, m), 2.20-1.96 (4H, m), 1.67-1.63 (2H, m), 1.45 (3H, d, J=7.0 Hz).

Workup

  1. washwashed with water and brine
  2. concentrationconcentrated
  3. customThe residue was purified by flash chromatography with 0-15% ethyl acetate in CH2Cl2

Sources & evidence

ORD record
ord-f43a549628114a8abe525be933bec518
Source dataset
uspto-grants-2014_05
Patent number
US08735414B2

Reaction notes

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