HuagongsheHuagongshe Chemistry Print Report · For research reference only
Sulfuric Acid → N-(4,5,6,7-Tetrahydro-1-benzothiophen-4-yl)urea
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Sulfuric Acid | HCID 1118 | — |
| Reactant | Urea | HCID 1176 | — |
| Reactant | 6,7-Dihydrobenzo[b]thiophene | HCID 20348965 | — |
| Product | N-(4,5,6,7-Tetrahydro-1-benzothiophen-4-yl)urea | HCID 13036998 | — |
Reaction Steps
A sample of 6,7-dihydrobenzo[b]thiophene is stirred in the cold in 96% sulfuric acid containing 4-6 mole equivalents of urea. After 1 hour the mixture is poured on ice and the organic phase is removed. Evaporation of the organic phase to dryness in vacuo affords 4,5,6,7-tetrahydrobenzo[b]thien-4-ylurea.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US04156670 |
| Source dataset | uspto-grants-1979_05 |
| ORD ID | ord-9c9aafbe52364a349aa528050e5a744b |
| Source note | uspto-grants-1979_05 |