Sodium Carbonate → Methyl 2',4'-difluoro-3-isopropoxybiphenyl-4-carboxylate

HRID 531018Notes

Reaction equation

HRID 531018 reaction equation
I[C:2]1[CH:11]=[CH:10][C:5]([C:6]([O:8][CH3:9])=[O:7])=[C:4]([O:12][CH:13]([CH3:15])[CH3:14])[CH:3]=1.[F:16][C:17]1[CH:22]=[C:21]([F:23])[CH:20]=[CH:19][C:18]=1B(O)O.C1(P(C2CCCCC2)C2C=CC=CC=2C2C(OC)=CC=CC=2OC)CCCCC1.C(=O)([O-])[O-].[Na+].[Na+]>C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.[Pd].[Pd].C1(C)C=CC=CC=1>[F:16][C:17]1[CH:22]=[C:21]([F:23])[CH:20]=[CH:19][C:18]=1[C:2]1[CH:11]=[CH:10][C:5]([C:6]([O:8][CH3:9])=[O:7])=[C:4]([O:12][CH:13]([CH3:15])[CH3:14])[CH:3]=1

Participants

7

Reactant 4

HCID 10340Sodium CarbonateHCID 27343342,4-Difluorophenylboronic acidHCID 112698722-Dicyclohexylphosphino-2',6'-dimethoxybiphenylHCID 90422834Methyl 4-iodo-2-isopropoxybenzoate

Product 1

HCID 117992133Methyl 2',4'-difluoro-3-isopropoxybiphenyl-4-carboxylateYield 99.4%

Reagents, catalysts & solvents 2

HCID 9811564Bis(dibenzylideneacetone)palladiumCatalystHCID 1140TolueneSolvent

Procedure

A mixture of methyl 4-iodo-2-isopropoxybenzoate (4.10 g), (2,4-difluorophenyl)boronic acid (4.04 g), dicyclohexyl(2′,6′-dimethoxybiphenyl-2-yl)phosphine (0.789 g), a 2 M aqueous sodium carbonate solution (19.2 mL), tris(dibenzylideneacetone)dipalladium(0) (0.821 g), and toluene (50 mL) was stirred at 100° C. for 2 hours in an argon atmosphere. The reaction mixture was allowed to cool to room temperature. Then, the organic layer was separated and passed through a short silica gel (NH) column, and the solvent was distilled off under reduced pressure. The obtained residue was purified by silica gel column chromatography (hexane/ethyl acetate) to obtain the title compound (3.90 g).

Workup

  1. customThen, the organic layer was separated
  2. distillationthe solvent was distilled off under reduced pressure
  3. customThe obtained residue was purified by silica gel column chromatography (hexane/ethyl acetate)

Sources & evidence

ORD record
ord-d2ec24ade8614775a9d783159eb23810
Source dataset
uspto-grants-2016_05
Patent number
US09353108B2

Reaction notes

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