HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1902998Generated: November 2, 2026
2-Chlorothiophene → 5-Chlorothiophene-2,4-disulfonyl dichloride
https://huagongshe.com/reaction/1902998
Participants
| Role | Name | HCID | Charge |
|---|
| Reactant | 2-Chlorothiophene | HCID 7299 | — |
| Reactant | Chlorosulfonic acid | HCID 24638 | — |
| Product | 5-Chlorothiophene-2,4-disulfonyl dichloride | HCID 350495 | — |
Reaction Steps
2-Chlorothiophene (40 g) was added to stirred chlorosulphonic acid (400 ml) over a five minute period. The solution was then heated at 80°-90° C. for four hours, cooled to 30° C., and added to ice-water with stirring. The product was filtered off, washed with water and dried. The yield was 84 g.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
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| Patent number | US04435320 |
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| Source dataset | uspto-grants-1984_03 |
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| ORD ID | ord-a73bbfb1fb5c4648af38db1b93a80e45 |
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| Source note | uspto-grants-1984_03 |
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