Cesium carbonate → 2-Chloro-5-(2-(4-fluorophenyl)-3-(methylcarbamoyl)benzofuran-5-yl)benzoic acid

HRID 555101Notes

Reaction equation

HRID 555101 reaction equation
FC(F)(F)S(O[C:7]1[CH:8]=[CH:9][C:10]2[O:14][C:13]([C:15]3[CH:20]=[CH:19][C:18]([F:21])=[CH:17][CH:16]=3)=[C:12]([C:22](=[O:25])[NH:23][CH3:24])[C:11]=2[CH:26]=1)(=O)=O.O1CCOCC1.B([C:38]1[CH:39]=[CH:40][C:41]([Cl:47])=[C:42]([CH:46]=1)[C:43]([OH:45])=[O:44])(O)O.C(=O)([O-])[O-].[Cs+].[Cs+]>Cl.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1.O>[Cl:47][C:41]1[CH:40]=[CH:39][C:38]([C:7]2[CH:8]=[CH:9][C:10]3[O:14][C:13]([C:15]4[CH:20]=[CH:19][C:18]([F:21])=[CH:17][CH:16]=4)=[C:12]([C:22](=[O:25])[NH:23][CH3:24])[C:11]=3[CH:26]=2)=[CH:46][C:42]=1[C:43]([OH:45])=[O:44]

Participants

8

Reactant 4

HCID 10796Cesium carbonateHCID 312751,4-DioxaneHCID 230053332-Chloro-5-(dihydroxyboranyl)benzoic acidHCID 59275663(4-Fluorophenyl)-3-(methylcarbamoyl)benzofuran-5-yl trifluoromethanesulfonate

Product 1

HCID 592751302-Chloro-5-(2-(4-fluorophenyl)-3-(methylcarbamoyl)benzofuran-5-yl)benzoic acid

Reagents, catalysts & solvents 3

HCID 178418397HCID 178418397, compoundCatalystHCID 313Hydrochloric AcidSolventHCID 962WaterSolvent

Conditions

Temperature
85 °C

Procedure

To a 250 mL sealed tube was added 2-(4-fluorophenyl)-3-(methylcarbamoyl)benzofuran-5-yl trifluoromethanesulfonate (3.55 g, 8.5 mmol), dioxane (50 mL), water (10 mL), Tetrakis(triphenylphosphine)palladium(0) (0.196 g, 0.170 mmol), 5-borono-2-chlorobenzoic acid (2.55 g, 12.75 mmol), and cesium carbonate (4.15 g, 12.75 mmol). The tube was sealed and heated in an oil bath overnight at 85° C. The reaction mixture was then cooled, diluted with 300 mL of cold 0.5M HCl and stirred for 30 minutes. The resulting solid was washed with 0.5 N HCl then with water and allowed to dry under vacuum giving a quantitative yield of 2-Chloro-5-(2-(4-fluorophenyl)-3-(methylcarbamoyl)benzofuran-5-yl)benzoic acid which was used without further purification. The LC/MS data was obtained on a Shimadzu analytical LC/MICROMASS® Platform LC (ESI+) at 220 nm using the following set of conditions: Waters Sunfire 5 μm C18, 4.6×50 mm column, with a gradient of 0-100% B (B=90% HPLC grade acetonitrile/0.1% trifluoroacetic acid/10% HPLC grade water), (A=90% HPLC grade water/0.1% trifluoroacetic acid/10% HPLC grade acetonitrile), in 3 minutes with a 1 minute hold at a rate of 4 mL/minute. LCMS m/z 424.77 (M+H), Rt 2.150 min., 90% purity.

Workup

  1. customTo a 250 mL sealed tube
  2. customThe tube was sealed
  3. temperatureThe reaction mixture was then cooled
  4. washThe resulting solid was washed with 0.5 N HCl
  5. customto dry under vacuum

Sources & evidence

ORD record
ord-c485662b0d734ad58357230e801db95e
Source dataset
uspto-grants-2011_11
Patent number
US08048887B2

Reaction notes

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