Triphenylphosphine → Ethyl 3-[4-({2',6'-dimethyl-4'-[(6-methylpyridin-2-yl)methoxy]biphenyl-3-yl}methoxy)-2-fluorophenyl]propanoate

HRID 273417Notes

Reaction equation

HRID 273417 reaction equation
[F:1][C:2]1[CH:7]=[C:6]([O:8][CH2:9][C:10]2[CH:11]=[C:12]([C:16]3[C:21]([CH3:22])=[CH:20][C:19]([OH:23])=[CH:18][C:17]=3[CH3:24])[CH:13]=[CH:14][CH:15]=2)[CH:5]=[CH:4][C:3]=1[CH2:25][CH2:26][C:27]([O:29][CH2:30][CH3:31])=[O:28].[CH3:32][C:33]1[N:38]=[C:37]([CH2:39]O)[CH:36]=[CH:35][CH:34]=1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.N(C(OC(C)C)=O)=NC(OC(C)C)=O>O1CCCC1>[CH3:22][C:21]1[CH:20]=[C:19]([O:23][CH2:39][C:37]2[CH:36]=[CH:35][CH:34]=[C:33]([CH3:32])[N:38]=2)[CH:18]=[C:17]([CH3:24])[C:16]=1[C:12]1[CH:13]=[CH:14][CH:15]=[C:10]([CH2:9][O:8][C:6]2[CH:5]=[CH:4][C:3]([CH2:25][CH2:26][C:27]([O:29][CH2:30][CH3:31])=[O:28])=[C:2]([F:1])[CH:7]=2)[CH:11]=1

Participants

6

Reactant 4

HCID 11776Triphenylphosphine2×HCID 707366-Methyl-2-pyridylmethanol2×HCID 75555Diisopropyl diazene-1,2-dicarboxylate2×HCID 58903128Ethyl 3-{2-fluoro-4-[(4'-hydroxy-2',6'-dimethylbiphenyl-3-yl)methoxy]phenyl}propanoate

Product 1

HCID 58903176Ethyl 3-[4-({2',6'-dimethyl-4'-[(6-methylpyridin-2-yl)methoxy]biphenyl-3-yl}methoxy)-2-fluorophenyl]propanoateYield 87%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

To a solution of ethyl 3-{2-fluoro-4-[(4′-hydroxy-2′,6′-dimethylbiphenyl-3-yl)methoxy]phenyl}propanoate (1.2 g, 2.84 mmol), (6-methylpyridin-2-yl)methanol (0.39 g, 3.12 mmol) and triphenylphosphine (0.95 g, 3.61 mmol) in tetrahydrofuran (24 mL) was added diisopropyl azodicarboxylate (40% toluene solution, 1.54 mL, 3.12 mmol) at room temperature with stirring. The reaction mixture was stirred at room temperature for 12 hrs., and an equivalent amount of the aforementioned reagents ((6-methylpyridin-2-yl)methanol, triphenylphosphine and diisopropyl azodicarboxylate) were added. The mixture was further stirred at the same temperature for 12 hrs. The reaction mixture was concentrated under reduced pressure and the residue was purified by silica gel column chromatography (hexane/ethyl acetate=10/1-hexane/ethyl acetate=1/1) to give the title compound (1.3 g, yield 87%) as a colorless oil.

Workup

  1. stirringThe reaction mixture was stirred at room temperature for 12 hrs
  2. stirringThe mixture was further stirred at the same temperature for 12 hrs
  3. concentrationThe reaction mixture was concentrated under reduced pressure
  4. customthe residue was purified by silica gel column chromatography (hexane/ethyl acetate=10/1-hexane/ethyl acetate=1/1)

Sources & evidence

ORD record
ord-6ce32ef9c1e5440abca2336acf4a28ce
Source dataset
uspto-grants-2008_11
Patent number
US07456218B2

Reaction notes

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