Sodium Carbonate → HCID 45036823, compound

HRID 2406436Notes

Reaction equation

HRID 2406436 reaction equation
Br[C:2]1[S:3][C:4]([CH:7]=[O:8])=[CH:5][N:6]=1.[F:9][C:10]1[CH:15]=[CH:14][C:13](B(O)O)=[CH:12][CH:11]=1.C(=O)([O-])[O-].[Na+].[Na+]>C1(C)C=CC=CC=1.C(O)C.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>[F:9][C:10]1[CH:15]=[CH:14][C:13]([C:2]2[S:3][C:4]([CH:7]=[O:8])=[CH:5][N:6]=2)=[CH:12][CH:11]=1

Participants

7

Reactant 3

HCID 10340Sodium CarbonateHCID 2856454-Fluorophenylboronic acidHCID 27732592-Bromo-1,3-thiazole-5-carbaldehyde

Product 1

HCID 45036823HCID 45036823, compoundYield 88%

Reagents, catalysts & solvents 3

HCID 178418397HCID 178418397, compoundCatalystHCID 702EthanolSolventHCID 1140TolueneSolvent

Conditions

Temperature
85 °C

Procedure

To a solution of 2-bromothiazole-5-carbaldehyde (5.0 g, 26.04 mmol) in toluene (150 mL) and ethanol (75 mL) was added (4-fluorophenyl)boronic acid (7.29 g, 52.08 mmol), 2M sodium carbonate solution (73.58 mL), Pd(PPh3)4 (1.5 g, 1.3 mmol) under argon atmosphere. The resulting mixture was heated at 85° C. for 6 h. The reaction mixture was concentrated under reduced pressure, the residue was diluted with water (150 mL), and extracted with ethyl acetate (5×500 mL). The organic layer was dried over Na2SO4, filtered and concentrated under reduced pressures to obtain crude product. The crude product was purified by Combiflash® chromatography (Mobile phase: 10% ethyl acetate in hexane) to give 2-(4-fluorophenyl)thiazole-5-carbaldehyde as off-white solid (200 mg, 88% yield). 1H NMR (400 MHz, DMSO-d6): δ 10.06 (s, 1H), 8.74 (s, 1H), 8.14-8.11 (m, 2H), 7.39 (t, 2H); LC-MS m/z calculated for [M+H]+ 208.02, found 207.9.

Workup

  1. concentrationThe reaction mixture was concentrated under reduced pressure
  2. additionthe residue was diluted with water (150 mL)
  3. extractionextracted with ethyl acetate (5×500 mL)
  4. dry with materialThe organic layer was dried over Na2SO4
  5. filtrationfiltered
  6. concentrationconcentrated under reduced pressures
  7. customto obtain crude product
  8. customThe crude product was purified by Combiflash® chromatography (Mobile phase: 10% ethyl acetate in hexane)

Sources & evidence

ORD record
ord-e6f7098bca6f4d3595a3e6dc4b3e3df9
Source dataset
uspto-grants-2014_08
Patent number
US08809372B2

Reaction notes

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