Dichloromethane → 4-(2'-Methoxy-biphenyl-4-yloxymethyl)-5-methyl-furan-2-carboxylic acid methyl ester

HRID 1786613Notes

Reaction equation

HRID 1786613 reaction equation
[CH3:1][O:2][C:3]([C:5]1[O:6][C:7]([CH3:27])=[C:8]([CH2:10][O:11][C:12]2[CH:17]=[CH:16][C:15](B3OC(C)(C)C(C)(C)O3)=[CH:14][CH:13]=2)[CH:9]=1)=[O:4].Br[C:29]1[CH:34]=[CH:33][CH:32]=[CH:31][C:30]=1[O:35][CH3:36].C(=O)([O-])[O-].[Cs+].[Cs+].ClCCl>O1CCOCC1>[CH3:1][O:2][C:3]([C:5]1[O:6][C:7]([CH3:27])=[C:8]([CH2:10][O:11][C:12]2[CH:13]=[CH:14][C:15]([C:29]3[CH:34]=[CH:33][CH:32]=[CH:31][C:30]=3[O:35][CH3:36])=[CH:16][CH:17]=2)[CH:9]=1)=[O:4]

Participants

6

Reactant 4

HCID 6344DichloromethaneHCID 10796Cesium carbonateHCID 113582-BromoanisoleHCID 588241625-Methyl-4-[4-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-phenoxymethyl]-furan-2-carboxylic acid methyl ester

Product 1

HCID 588241584-(2'-Methoxy-biphenyl-4-yloxymethyl)-5-methyl-furan-2-carboxylic acid methyl esterYield 21%

Reagents, catalysts & solvents 1

HCID 312751,4-DioxaneSolvent

Procedure

A degassed mixture of 5-methyl-4-[4-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-phenoxymethyl]-furan-2-carboxylic acid methyl ester (119) (200 mg, 0.54 mmoles), 1-bromo-2-methoxy-benzene (80 μl, 0.65 mmoles), 2M aqueous cesium carbonate (11.0 ml) and), [1,1′-bis(diphenylphosphino) ferrocene]dichloropalladium(II) complex with dichloromethane (1:1) (44 mg) in 1,4-dioxan (30 ml), under an argon atmosphere was heated at 95° C. for 18 hours. After cooling, the mixture was concentrated, the residue dissolved in ethyl acetate and washed with brine and dried. After evaporation of the solvent, the residue was purified by flash chromatography using cyclohexane/ethyl acetate 9:1 v/v as eluent to afford compound 125 (40 mg) as an oil. LC/MS System A; Rt=4.14 mins, m/z (ES+)=353 weak (M+H for C21H20O5).

Workup

  1. temperatureAfter cooling
  2. concentrationthe mixture was concentrated
  3. dissolutionthe residue dissolved in ethyl acetate
  4. washwashed with brine
  5. customdried
  6. customAfter evaporation of the solvent
  7. customthe residue was purified by flash chromatography

Sources & evidence

ORD record
ord-7fb2007ee68c4b29b71708a42bf794c5
Source dataset
uspto-grants-2009_03
Patent number
US07507754B2

Reaction notes

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