2-(Tri-n-butylstannyl)thiophene → HCID 21945618, compound

HRID 392659Notes

Reaction equation

HRID 392659 reaction equation
Br[C:2]1[S:3][C:4](Br)=[C:5]([CH2:15][CH2:16][CH2:17][CH2:18][CH2:19][CH2:20][CH2:21][CH3:22])[C:6]=1[CH2:7][CH2:8][CH2:9][CH2:10][CH2:11][CH2:12][CH2:13][CH3:14].C([Sn](CCCC)(CCCC)[C:29]1[S:30][CH:31]=[CH:32][CH:33]=1)CCC>O1CCCC1.Cl[Pd](Cl)([P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1)[P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1>[S:3]1[CH:4]=[CH:5][CH:6]=[C:2]1[C:2]1[S:3][C:4]([C:31]2[S:30][CH:29]=[CH:33][CH:32]=2)=[C:5]([CH2:15][CH2:16][CH2:17][CH2:18][CH2:19][CH2:20][CH2:21][CH3:22])[C:6]=1[CH2:7][CH2:8][CH2:9][CH2:10][CH2:11][CH2:12][CH2:13][CH3:14]

Participants

5

Reactant 2

HCID 27793732-(Tri-n-butylstannyl)thiopheneHCID 219456172,5-Dibromo-3,4-dioctylthiophene

Product 1

HCID 21945618HCID 21945618, compoundYield 145.7%

Reagents, catalysts & solvents 2

HCID 178418476HCID 178418476, compoundCatalystHCID 8028TetrahydrofuranSolvent

Procedure

In a dry box under an inert atmosphere, Pd(PPh3)2Cl2 (0.15 gram, 0.2 mmol) was added to a mixture of 2,5dibromo-3,4-dioctylthiophene (4.2 grams, 9.0 mmol) and 2-(tributylstannyl)-thiophene (7.4 grams, 19.8 mmol) in anhydrous tetrahydrofuran (50 milliliters) in a 250 milliliter round-bottomed flask. The mixture was then refluxed for 12 hours and the solvent was removed by evaporation. The crude product thus obtained was purified by flash chromatography on silica gel using hexane as eluent to give 3.1 grams of 2,5-bis(2thienyl)-3,4-dioctylthiophene.

Workup

  1. temperatureThe mixture was then refluxed for 12 hours
  2. customthe solvent was removed by evaporation
  3. customThe crude product thus obtained
  4. customwas purified by flash chromatography on silica gel

Sources & evidence

ORD record
ord-d8ed8454afdb475a83d4e8564ed7fcb7
Source dataset
uspto-grants-2004_10
Patent number
US06803262B2

Reaction notes

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