Chlorosulfonic acid → HCID 22998500, compound

HRID 234361Notes

Reaction equation

HRID 234361 reaction equation
[CH2:1]([C:8]1[S:9][CH:10]=[CH:11][CH:12]=1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.Cl[S:14]([OH:17])(=[O:16])=[O:15]>C(Cl)(Cl)Cl>[CH2:1]([C:8]1[S:9][C:10]([S:14]([OH:17])(=[O:16])=[O:15])=[CH:11][CH:12]=1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1

Participants

4

Reactant 2

HCID 24638Chlorosulfonic acidHCID 139391Thiophene, 2-(phenylmethyl)-

Product 1

HCID 22998500HCID 22998500, compound

Reagents, catalysts & solvents 1

HCID 6212ChloroformSolvent

Conditions

Temperature
0 °C

Procedure

To a solution of 2-benzylthiophene (0.875 g, 5 mmol) in chloroform (2 ml) at 0° C. was added chlorosulfonic acid dropwise and the reaction was stirred at 0° C. for 30 min. The reaction mixture was decomposed by pouring onto crushed ice (20 g). The mixture was extracted with ethyl acetate, dried over MgSO4 and filtered. The solvent was removed under reduced pressure to give 5-benzylthiophene-2-sulfonic acid.

Workup

  1. additionby pouring
  2. extractionThe mixture was extracted with ethyl acetate
  3. dry with materialdried over MgSO4
  4. filtrationfiltered
  5. customThe solvent was removed under reduced pressure

Sources & evidence

ORD record
ord-bfd340a39c6f4a549a81a865b602182e
Source dataset
uspto-grants-1997_01
Patent number
US05594021

Reaction notes

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