Carbon Dioxide → 2,3-diphenylthiophene

HRID 2216729Notes

Reaction equation

HRID 2216729 reaction equation
[C:1]1([C:7]2[CH:8]=[C:9](C(O)=O)[S:10][C:11]=2[C:12]2[CH:17]=[CH:16][CH:15]=[CH:14][CH:13]=2)[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.C(=O)=O>O>[C:12]1([C:11]2[S:10][CH:9]=[CH:8][C:7]=2[C:1]2[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=2)[CH:13]=[CH:14][CH:15]=[CH:16][CH:17]=1

Participants

4

Reactant 2

HCID 280Carbon DioxideHCID 198352584,5-Diphenylthiophene-2-carboxylic acid

Product 1

HCID 28017362,3-diphenylthiophene

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Procedure

The 4,5-diphenyl-2-thiophenecarboxylic acid (28 g, 0.1 mol) prepared as described above was heated to 220–230° C. until the evolution of carbon dioxide ceased. The residue was diluted in water and extracted with 100 mL of benzene. The organic phase was dried over MgSO4 and evaporated off to give the crystallized product. Yield 22.45 g (95%).

Workup

  1. extractionextracted with 100 mL of benzene
  2. dry with materialThe organic phase was dried over MgSO4
  3. customevaporated off
  4. customto give the crystallized product

Sources & evidence

ORD record
ord-ec61541dea7d42e69cc00976658599af
Source dataset
uspto-grants-2006_09
Patent number
US07112638B2

Reaction notes

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