Maleic Anhydride → HCID 556018, compound

HRID 1596128Notes

Reaction equation

HRID 1596128 reaction equation
[S:1]1[CH:5]=[CH:4][CH:3]=[CH:2]1.[C:6]1(=[O:12])[O:11][C:9](=[O:10])[CH:8]=[CH:7]1>O1CCCC1>[CH:2]12[S:1][CH:5]([CH:4]=[CH:3]1)[CH:7]1[C:6]([O:11][C:9](=[O:10])[CH:8]21)=[O:12]

Participants

4

Reactant 2

HCID 7923Maleic AnhydrideHCID 8030Thiophene

Product 1

HCID 556018HCID 556018, compound

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Conditions

Temperature
700 °C

Procedure

In tetrahydrofuran solvent (500 g), thiophene (1 mole) and maleic anhydride (1 mole) are dissolved, and the solution is introduced into a 2-liter flask. After stirring at 700° C. for 24 hours, the solvent is removed by using a rotary evaporator. The residue is distilled in vacuo to obtain pure 7-thiabicyclo[2.2.1]hept-5-ene-2,3-dicarboxylic anhydride of the following Chemical Formula 201 (yield: 90%).

Workup

  1. additionthe solution is introduced into a 2-liter flask
  2. customthe solvent is removed
  3. customa rotary evaporator
  4. distillationThe residue is distilled in vacuo

Sources & evidence

ORD record
ord-9d234c67832a428e8cb9d5ce67fa3caf
Source dataset
uspto-grants-2001_09
Patent number
US06291131B1

Reaction notes

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