Sodium Carbonate → HCID 58095188, compound

HRID 2402437Notes

Reaction equation

HRID 2402437 reaction equation
[C:1]([C:3]1[C:4]([C:14]2[CH:19]=[CH:18][C:17]([Cl:20])=[CH:16][C:15]=2[Cl:21])=[C:5]([C:9]([O:11][CH2:12][CH3:13])=[O:10])[S:6][C:7]=1I)#[N:2].[F:22][C:23]1[CH:28]=[C:27](B(O)O)[CH:26]=[CH:25][N:24]=1.C(=O)([O-])[O-].[Na+].[Na+]>COCCOC.O.CCOC(C)=O.C([O-])(O)=O.[Na+].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>[C:1]([C:3]1[C:4]([C:14]2[CH:19]=[CH:18][C:17]([Cl:20])=[CH:16][C:15]=2[Cl:21])=[C:5]([C:9]([O:11][CH2:12][CH3:13])=[O:10])[S:6][C:7]=1[C:27]1[CH:26]=[CH:25][N:24]=[C:23]([F:22])[CH:28]=1)#[N:2]

Participants

9

Reactant 3

HCID 10340Sodium CarbonateHCID 27833962-Fluoropyridine-4-boronic acidHCID 59250036HCID 59250036, compound

Product 1

HCID 58095188HCID 58095188, compound

Reagents, catalysts & solvents 5

HCID 178418397HCID 178418397, compoundCatalystHCID 962WaterSolventHCID 80711,2-DimethoxyethaneSolventHCID 8857Ethyl AcetateSolventHCID 516892Sodium BicarbonateSolvent

Conditions

Temperature
140 °C

Procedure

A mixture of ethyl 4-cyano-3-(2,4-dichlorophenyl)-5-iodothiophene-2-carboxylate (1.81 g, 0.00400 mol), 2-Fluoro-4-pyridinylboronic acid (1.13 g, 0.00801 mol), Tetrakis(triphenylphosphine)palladium(0) (0.231 g, 0.0002 mol) and sodium carbonate (1.27 g, 0.0120 mol) in 1,2-Dimethoxyethane (20 mL) and Water (10 mL) was heated under microwave irradiation at 140° C. for 15 min. The reaction mixture was diluted with EtOAc and sat. NaHCO3. The layers were separated and the aqueous layer was extracted 2× with EtOAc. The combined organic extracts were washed with brine, dried over Na2SO4, filtered and concentrated to in vacuo to a brown oil. The residue was loaded onto a 24 g Analogix silica gel column and eluted with hexane (3 min) to 50% EtOAc in hexanes (25 min gradient). The appropriate fractions were concentrated to a white solid (1.25 g, 74%). LCMS: (FA) ES+, 421, 423. 1H NMR (400 MHz, d6-DMSO) 8.42 (d, J=5.28 Hz, 1H), 7.65 (td, J=5.27, 1.51, 1.51 Hz, 1H), 7.57 (d, J=2.00 Hz, 1H), 7.45-7.34 (m, 1H), 7.29 (d, J=8.26 Hz, 1H), 4.34-4.17 (m, 1H), 1.21 (t, J=7.14, 7.14 Hz, 1H).

Workup

  1. customThe layers were separated
  2. extractionthe aqueous layer was extracted 2× with EtOAc
  3. washThe combined organic extracts were washed with brine
  4. dry with materialdried over Na2SO4
  5. filtrationfiltered
  6. concentrationconcentrated to in vacuo to a brown oil
  7. washeluted with hexane (3 min) to 50% EtOAc in hexanes (25 min gradient)
  8. concentrationThe appropriate fractions were concentrated to a white solid (1.25 g, 74%)

Sources & evidence

ORD record
ord-96a1bc9b0c73469085b50e5ab4a3bda0
Source dataset
uspto-grants-2014_08
Patent number
US08796314B2

Reaction notes

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