HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 263193Generated: October 28, 2026
Potassium cyanate → 2-Acetyl-4,5,6,7-tetrahydrobenzo[b]thien-4-ylurea
https://huagongshe.com/reaction/263193
Participants
| Role | Name | HCID | Charge |
|---|
| Reactant | Potassium cyanate | HCID 11378442 | — |
| Reactant | 2-Acetyl-4,5,6,7-tetrahydrobenzo[b]thiophen-4-amine hydrochloride | HCID 20348970 | — |
| Solvent | Water | HCID 962 | — |
| Product | 2-Acetyl-4,5,6,7-tetrahydrobenzo[b]thien-4-ylurea | HCID 20348989 | — |
Reaction Steps
A sample of 6.3 grams of 2-acetyl-4,5,6,7-tetrahydrobenzo[b]thiophen-4-amine hydrochloride is dissolved in 35 ml. of water and cooled to 15° C. A solution of 2.64 grams of potassium cyanate in 35 ml. of water is added, and after 0.5 hour the mixture is heated at 70° C. for about 40 minutes. The mixture is cooled, and the solid is collected and washed with water. On drying, 5.55 grams, melting point 218° C. to 220° C., of 2-acetyl-4,5,6,7-tetrahydrobenzo[b]thien-4-ylurea is obtained.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
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| Patent number | US04156670 |
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| Source dataset | uspto-grants-1979_05 |
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| ORD ID | ord-0602b9856abc45ba99cb6eaa87e5a14b |
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| Source note | uspto-grants-1979_05 |
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