Cesium carbonate → 3-(4-{2-[3-(4-Methoxy-benzyl)-2-oxo-1-(4-trifluoromethyl-benzyl)-imidazolidin-4-yl]-ethoxy}-phenyl)-2-methyl-2-phenoxy-propionic acid ethyl ester

HRID 1985166Notes

Reaction equation

HRID 1985166 reaction equation
C(=O)([O-])[O-].[Cs+].[Cs+].[CH2:7]([O:9][C:10](=[O:28])[C:11]([CH3:27])([O:20][C:21]1[CH:26]=[CH:25][CH:24]=[CH:23][CH:22]=1)[CH2:12][C:13]1[CH:18]=[CH:17][C:16]([OH:19])=[CH:15][CH:14]=1)[CH3:8].[CH3:29][O:30][C:31]1[CH:67]=[CH:66][C:34]([CH2:35][N:36]2[CH:40]([CH2:41][CH2:42]OS(C3C=CC(C)=CC=3)(=O)=O)[CH2:39][N:38]([CH2:54][C:55]3[CH:60]=[CH:59][C:58]([C:61]([F:64])([F:63])[F:62])=[CH:57][CH:56]=3)[C:37]2=[O:65])=[CH:33][CH:32]=1>CN(C=O)C.C(OCC)(=O)C>[CH2:7]([O:9][C:10](=[O:28])[C:11]([CH3:27])([O:20][C:21]1[CH:26]=[CH:25][CH:24]=[CH:23][CH:22]=1)[CH2:12][C:13]1[CH:18]=[CH:17][C:16]([O:19][CH2:42][CH2:41][CH:40]2[CH2:39][N:38]([CH2:54][C:55]3[CH:56]=[CH:57][C:58]([C:61]([F:64])([F:63])[F:62])=[CH:59][CH:60]=3)[C:37](=[O:65])[N:36]2[CH2:35][C:34]2[CH:33]=[CH:32][C:31]([O:30][CH3:29])=[CH:67][CH:66]=2)=[CH:15][CH:14]=1)[CH3:8]

Participants

6

Reactant 3

HCID 10796Cesium carbonateHCID 11220314Ethyl 3-(4-hydroxyphenyl)-2-methyl-2-phenoxypropionateHCID 86596230Toluene-4-sulfonic acid 2-[3-(4-methoxy-benzyl)-2-oxo-1-(4-trifluoromethyl-benzyl)-imidazolidin-4-yl]-ethyl ester

Product 1

HCID 688698823-(4-{2-[3-(4-Methoxy-benzyl)-2-oxo-1-(4-trifluoromethyl-benzyl)-imidazolidin-4-yl]-ethoxy}-phenyl)-2-methyl-2-phenoxy-propionic acid ethyl esterYield 94%

Reagents, catalysts & solvents 2

HCID 6228DimethylformamideSolventHCID 8857Ethyl AcetateSolvent

Procedure

Cesium carbonate (2.49 g, 7.647 mmol) is added to a solution of 3-(4-Hydroxy-phenyl)-2-methyl-2-phenoxy-propionic acid ethyl ester (1.77 g, 5.88 mmol) and toluene-4-sulfonic acid 2-[3-(4-methoxy-benzyl)-2-oxo-1-(4-trifluoromethyl-benzyl)-imidazolidin-4-yl]-ethyl ester (3.64 g, 6.47 mmol) in DMF (40 mL). The resultant mixture is stirred at 55° C. under an atmosphere of nitrogen for 18 h, then diluted with ethyl acetate. The organic layer is washed, then dried, concentrated, and purified by flash chromatography (acetone/hexanes gradient) to provide the title compound (3.80 g, 94%). 1H NMR (400 MHz, CDCl3): δ 7.57 (d, 2H, J=8.4 Hz), 7.37 (d, 2H, J=7.8 Hz), 7.23-7.19 (m, 4H), 7.13 (d, 2H, J=8.4 Hz), 6.97 (t, 1H, J=7.8 Hz), 6.86 (d, 2H, J=8.4 Hz), 6.81 (d, 2H, J=8.4 Hz), 6.67 (d, 2H, J=7.8 Hz), 4.66, 4.20 (ABq, 2H, J=14.9 Hz), 4.47, 4.43 (ABq, 2H, J=15.5 Hz), 4.20 (q, 2H, J=7.1 Hz), 3.89-3.85 (m, 2H), 3.80 (s, 3H), 3.61-3.55 (m, 1H), 3.31 (t, 1H, J=9.1 Hz), 3.26, 3.08 (ABq, 2H, J=13.6 Hz), 3.00 (t, 1H, J=9.1 Hz), 2.20-2.14 (m, 1H), 1.87-1.78 (m, 1H), 1.38 (s, 3H), 1.21 (t, 3H, J=7.1 Hz). MS [EI+] 691 (M+H)+. Rf=0.46 in 50% acetone in hexanes.

Workup

  1. washThe organic layer is washed
  2. customdried
  3. concentrationconcentrated
  4. custompurified by flash chromatography (acetone/hexanes gradient)

Sources & evidence

ORD record
ord-0328fdb16a9044788a689f38086d652e
Source dataset
uspto-grants-2009_06
Patent number
US07544812B2

Reaction notes

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