Cesium carbonate → 4-Methyl-2-{5-[1-(3-methyl-butyl)-piperidin-4-yl]-4'-trifluoromethyl-biphenyl-3-yl}-pentanoic acid ethyl ester

HRID 889759Notes

Reaction equation

HRID 889759 reaction equation
[CH2:1]([O:3][C:4](=[O:32])[CH:5]([C:10]1[CH:11]=[C:12]([C:22]2[CH:27]=[CH:26][C:25]([C:28]([F:31])([F:30])[F:29])=[CH:24][CH:23]=2)[CH:13]=[C:14]([CH:16]2[CH2:21][CH2:20][NH:19][CH2:18][CH2:17]2)[CH:15]=1)[CH2:6][CH:7]([CH3:9])[CH3:8])[CH3:2].C([O-])([O-])=O.[Cs+].[Cs+].I[CH2:40][CH2:41][CH:42]([CH3:44])[CH3:43]>CN(C)C=O>[CH2:1]([O:3][C:4](=[O:32])[CH:5]([C:10]1[CH:11]=[C:12]([C:22]2[CH:27]=[CH:26][C:25]([C:28]([F:29])([F:30])[F:31])=[CH:24][CH:23]=2)[CH:13]=[C:14]([CH:16]2[CH2:17][CH2:18][N:19]([CH2:40][CH2:41][CH:42]([CH3:44])[CH3:43])[CH2:20][CH2:21]2)[CH:15]=1)[CH2:6][CH:7]([CH3:9])[CH3:8])[CH3:2]

Participants

5

Reactant 3

HCID 10796Cesium carbonateHCID 109241-Iodo-3-methylbutaneHCID 576660434-Methyl-2-(5-piperidin-4-yl-4'-trifluoromethyl-biphenyl-3-yl)-pentanoic acid ethyl ester

Product 1

HCID 576660704-Methyl-2-{5-[1-(3-methyl-butyl)-piperidin-4-yl]-4'-trifluoromethyl-biphenyl-3-yl}-pentanoic acid ethyl ester

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

To a solution of a mixture of 4-methyl-2-(5-piperidin-4-yl-4′-trifluoromethyl-biphenyl-3-yl)-pentanoic acid ethyl ester and methyl ester (68b) (57 mg, 0.13 mmol) in N,N-dimethylformamide (1.0 mL) was added Cs2CO3(85 mg, 0.26 mmol) and 1-iodo-3-methyl-butane (0.025 mL, 0.19 mmol). The mixture was stirred for 2 h at room temperature. The reaction was diluted with EtOAC (10 mL) and washed with saturated aqueous NaHCO3 solution, brine and water. The organic fraction was dried (MgSO4) and concentrated in vacuo. The crude mixture was purified by ISCO column chromatography to obtain 4-methyl-2-{5-[1-(3-methyl-butyl)-piperidin-4-yl]-4′-trifluoromethyl-biphenyl-3-yl}-pentanoic acid ethyl ester and methyl ester. Calcd for C30H40F3NO2 (M+H) 504.64, Found 504.4 (methyl ester) and Calcd for C31H42F3NO2 (M+H) 518.67, Found 518.7 (ethyl ester).

Workup

  1. additionThe reaction was diluted with EtOAC (10 mL)
  2. washwashed with saturated aqueous NaHCO3 solution, brine and water
  3. dry with materialThe organic fraction was dried (MgSO4)
  4. concentrationconcentrated in vacuo
  5. customThe crude mixture was purified by ISCO column chromatography

Sources & evidence

ORD record
ord-197649a5b3134269862d18477fea26d2
Source dataset
uspto-grants-2012_08
Patent number
US08252935B2

Reaction notes

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