Sodium Bicarbonate → HCID 58028448, compound

HRID 449734Notes

Reaction equation

HRID 449734 reaction equation
[Na+].[CH2:2]([C:8]1[S:12][C:11](OB(O)[O-])=[CH:10][CH:9]=1)[CH2:3][CH2:4][CH2:5][CH2:6][CH3:7].Br[C:18]1[CH:23]=[CH:22][C:21]([C:24]2[CH:29]=[CH:28][C:27]([CH2:30][CH2:31][CH2:32][CH2:33][CH3:34])=[CH:26][CH:25]=2)=[C:20]([F:35])[CH:19]=1.C(=O)([O-])O.[Na+]>C1COCC1.O.CC(OC)(C)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:35][C:20]1[CH:19]=[C:18]([C:11]2[S:12][C:8]([CH2:2][CH2:3][CH2:4][CH2:5][CH2:6][CH3:7])=[CH:9][CH:10]=2)[CH:23]=[CH:22][C:21]=1[C:24]1[CH:29]=[CH:28][C:27]([CH2:30][CH2:31][CH2:32][CH2:33][CH3:34])=[CH:26][CH:25]=1

Participants

7

Reactant 3

HCID 516892Sodium BicarbonateHCID 227175154-Bromo-2-fluoro-4'-pentyl-1,1'-biphenylHCID 131730280HCID 131730280, compound

Product 1

HCID 58028448HCID 58028448, compound

Reagents, catalysts & solvents 3

HCID 178418397HCID 178418397, compoundCatalystHCID 15413tert-Butyl methyl etherSolventHCID 21881883Oxolane--water (1/1)Solvent

Procedure

A mixture of 3.30 g (13.1 mmol) of 5-hexylthiophen-2-ylhydroxyboronic acid sodium salt, 4.20 g (13.1 mmol) of 4-bromo-2-fluoro-4′-pentylbiphenyl, 2.2 g (26.2 mmol) of sodium hydrogencarbonate and 0.70 g (0.61 mmol) of tetrakis(triphenylphosphine)palladium(0) in THF/water (1:1) is heated under reflux for 6 h. The mixture is diluted with MTBE, and the organic phase is separated off. The aqueous phase is extracted with MTBE. The combined organic phases are washed with sat. sodium chloride soln. and dried using sodium sulfate. The solution is concentrated to completion, and the residue is purified by column chromatography (SiO2, n-heptane). The further purification is carried out by recrystallisation from methanol/pentane (5:1). 2-(2-Fluoro-4′-pentylbiphenyl-4-yl)-5-hexylthiophene is obtained as a colourless solid having an m.p. of 44° C.

Workup

  1. temperatureis heated
  2. temperatureunder reflux for 6 h
  3. customthe organic phase is separated off
  4. extractionThe aqueous phase is extracted with MTBE
  5. washThe combined organic phases are washed with sat. sodium chloride soln
  6. customand dried
  7. concentrationThe solution is concentrated to completion
  8. customthe residue is purified by column chromatography (SiO2, n-heptane)
  9. customThe further purification
  10. customis carried out by recrystallisation from methanol/pentane (5:1)

Sources & evidence

ORD record
ord-0edbbba8d78547ea94b1f3eda102aa77
Source dataset
uspto-grants-2013_07
Patent number
US08486297B2

Reaction notes

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