Tributylphosphine → 3-(4-{1-[4-Ethyl-2-(4-trifluoromethyl-phenyl)-oxazol-5-yl]-ethoxy}-2-methyl-phenyl)-propionic Acid Methyl Ester

HRID 860661Notes

Reaction equation

HRID 860661 reaction equation
[CH2:1]([C:3]1[N:4]=[C:5]([C:11]2[CH:16]=[CH:15][C:14]([C:17]([F:20])([F:19])[F:18])=[CH:13][CH:12]=2)[O:6][C:7]=1[CH:8]([OH:10])[CH3:9])[CH3:2].[CH3:21][O:22][C:23](=[O:34])[CH2:24][CH2:25][C:26]1[CH:31]=[CH:30][C:29](O)=[CH:28][C:27]=1[CH3:33].C(P(CCCC)CCCC)CCC.N(C(N1CCCCC1)=O)=NC(N1CCCCC1)=O>C1(C)C=CC=CC=1.CCCCCC>[CH3:21][O:22][C:23](=[O:34])[CH2:24][CH2:25][C:26]1[CH:31]=[CH:30][C:29]([O:10][CH:8]([C:7]2[O:6][C:5]([C:11]3[CH:16]=[CH:15][C:14]([C:17]([F:20])([F:19])[F:18])=[CH:13][CH:12]=3)=[N:4][C:3]=2[CH2:1][CH3:2])[CH3:9])=[CH:28][C:27]=1[CH3:33]

Participants

7

Reactant 4

HCID 13831TributylphosphineHCID 730421,1'-(Azodicarbonyl)dipiperidineHCID 13551833Methyl 3-(4-Hydroxy-2-methylphenyl)propanoateHCID 587658011-[4-Ethyl-2-(4-trifluoromethyl-phenyl)-oxazol-5-yl]-ethanol

Product 1

HCID 102885253-(4-{1-[4-Ethyl-2-(4-trifluoromethyl-phenyl)-oxazol-5-yl]-ethoxy}-2-methyl-phenyl)-propionic Acid Methyl Ester

Reagents, catalysts & solvents 2

HCID 1140TolueneSolvent2×HCID 8058HexaneSolvent

Procedure

To a solution of 1-[4-ethyl-2-(4-trifluoromethyl-phenyl)-oxazol-5-yl]-ethanol (0.114 g, 0.400 mmole) and 3-(4-Hydroxy-2-methyl-phenyl)-propionic acid methyl ester (0.0789, 0.400 mmole) in toluene (2 mL) at room temperature, is added tributylphosphine (0.200 mL, 0.800 mmole) followed by a solution of 1,1′-(azodicarbonyl)-dipiperidine (0.201 g, 0.800 mmole) in toluene (2 mL). The reaction is stirred overnight, then diluted with hexane (10 mL). The precipitate is removed through filtration and the filtrate is concentrated, loaded to a silica gel column, eluted with ethyl acetate in hexane (0–15%) and concentrated to provide the titled compound as a white solid. Mass [EI+] 462 (M+H)+.

Workup

  1. customThe precipitate is removed through filtration
  2. concentrationthe filtrate is concentrated
  3. washeluted with ethyl acetate in hexane (0–15%)
  4. concentrationconcentrated

Sources & evidence

ORD record
ord-bd1af94069db4636b5b98816e534ccb7
Source dataset
uspto-grants-2006_12
Patent number
US07153878B2

Reaction notes

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