Cesium carbonate → (s)-n-(1-(5-Chloropyridin-2-yl)-1-(3-ethoxy-5-fluorophenyl)-2-phenylethyl)-4-fluoro-3-(trifluoromethyl)benzamide

HRID 1365496Notes

Reaction equation

HRID 1365496 reaction equation
[Cl:1][C:2]1[CH:3]=[CH:4][C:5]([C@@:8]([NH:24][C:25](=[O:37])[C:26]2[CH:31]=[CH:30][C:29]([F:32])=[C:28]([C:33]([F:36])([F:35])[F:34])[CH:27]=2)([C:16]2[CH:21]=[C:20]([OH:22])[CH:19]=[C:18]([F:23])[CH:17]=2)[CH2:9][C:10]2[CH:15]=[CH:14][CH:13]=[CH:12][CH:11]=2)=[N:6][CH:7]=1.C([O-])([O-])=O.[Cs+].[Cs+].I[C:45]([C:48](OCC)=O)(F)F.C([O-])(O)=O.[Na+]>CN(C=O)C>[Cl:1][C:2]1[CH:3]=[CH:4][C:5]([C@@:8]([NH:24][C:25](=[O:37])[C:26]2[CH:31]=[CH:30][C:29]([F:32])=[C:28]([C:33]([F:34])([F:36])[F:35])[CH:27]=2)([C:16]2[CH:17]=[C:18]([F:23])[CH:19]=[C:20]([O:22][CH2:45][CH3:48])[CH:21]=2)[CH2:9][C:10]2[CH:15]=[CH:14][CH:13]=[CH:12][CH:11]=2)=[N:6][CH:7]=1

Participants

6

Reactant 4

HCID 10796Cesium carbonateHCID 516892Sodium BicarbonateHCID 2737200Ethyl difluoro(iodo)acetateHCID 58920056(S)-N-(1-(5-chloropyridin-2-yl)-1-(3-fluoro-5-hydroxyphenyl)-2-phenylethyl)-4-fluoro-3-(trifluoromethyl)benzamide

Product 1

HCID 58921033(s)-n-(1-(5-Chloropyridin-2-yl)-1-(3-ethoxy-5-fluorophenyl)-2-phenylethyl)-4-fluoro-3-(trifluoromethyl)benzamideYield 7.4%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Conditions

Temperature
60 °C

Procedure

To a solution of (S)-N-(1-(5-chloropyridin-2-yl)-1-(3-fluoro-5-hydroxyphenyl)-2-phenylethyl)-4-fluoro-3-(trifluoromethyl)benzamide (32 mg, 0.06 mmol, prepared as described in Procedure 14) in DMF (0.5 mL) was added Cs2CO3 (39 mg, 0.12) and ICF2CO2Et (28 mg, 0.12 mmol). The mixture was heated at 60° C. for 3 days. NaHCO3 was added. It was extracted with CH2Cl2. The organic layer was washed with 10% citric acid, brine, dried over MgSO4, concentrated and the crude mixture was purified by preparative HPLC (phenominex C18 column, 21×100 mm, 5 μ) using MeOH/H2O (0.1% TFA) to give two products, (S)-N-(1-(5-chloropyridin-2-yl)-1-(3-ethoxy-5-fluorophenyl)-2-phenylethyl)-4-fluoro-3-(trifluoromethyl)benzamide (2.5 mg, 7% yield) as a pale yellow solid, LCMS: 4.38 min [M+1] 561.44 (4 min gradient, MeOH/H2O 0.1% TFA); 1H NMR (400 MHz, CDCl3) δ ppm 1.33-1.40 (m, J=6.88, Hz, 3 H), 3.61 (d, J=12.88 Hz, 1 H), 3.93-4.00 (m, 2 H), 4.54 (d, J=12.88 Hz, 1 H), 6.49-6.56 (m, 3 H), 6.76 (dt, J=9.85, 1.89 Hz, 1 H), 6.84 (s, 1 H), 7.02 (t, J=7.45 Hz, 2 H), 7.11 (t, J=7.33 Hz, 1 H), 7.22-7.31 (m, 3 H), 7.70 (dd, J=8.59, 2.27 Hz, 1 H), 7.85-7.90 (m, 1 H), 8.03 (dd, J=6.82, 2.02 Hz, 1 H), 8.32 (d, J=2.53 Hz, 1 H), 9.11 (s, 1 H), and (S)-N-(1-(5-chloropyridin-2-yl)-1-(3-(difluoromethoxy)-5-fluorophenyl)-2-phenylethyl)-4-fluoro-3-(trifluoromethyl)benzamide (3 mg, 7% yield) as a pale yellow foam, LCMS: 4.28 min [M+1] 583.32 (4 min gradient, MeOH/H2O 0.1% TFA); 1 H NMR (400 MHz, CDCl3) δ ppm 3.61 (d, J=12.88 Hz, 1 H), 4.54 (d, J=12.88 Hz, 1 H), 6.51 (m, 3 H), 6.76-6.83 (m, 1 H), 7.00-7.08 (m, 4 H), 7.13 (t, J=7.45 Hz, 1 H), 7.20-7.29 (m, 2 H), 7.74 (dd, J=8.59, 2.27 Hz, 1 H), 7.87 (ddd, J=8.46, 4.67, 2.27 Hz, 1 H), 8.02 (dd, J=6.69, 1.89 Hz, 1 H), 8.35 (d, J=2.27 Hz, 1 H), 9.11 (s, 1 H).

Workup

  1. extractionIt was extracted with CH2Cl2
  2. washThe organic layer was washed with 10% citric acid, brine
  3. dry with materialdried over MgSO4
  4. concentrationconcentrated
  5. customthe crude mixture was purified by preparative HPLC (phenominex C18 column, 21×100 mm, 5 μ)

Sources & evidence

ORD record
ord-3738b541eaa145e38fa8c0108cc4e9ec
Source dataset
uspto-grants-2011_02
Patent number
US07888376B2

Reaction notes

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