HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1076574Generated: October 31, 2026
Carbamic acid, ethyl ester → HCID 178517447, compound
https://huagongshe.com/reaction/1076574
Participants
| Role | Name | HCID | Charge |
|---|
| Reactant | Carbamic acid, ethyl ester | HCID 5641 | — |
| Reactant | 2-AMINO-3-(2-CHLOROBENZOYL)THIOPHENE | HCID 827126 | — |
| Catalyst | Zincchloride | HCID 3007855 | — |
| Product | HCID 178517447 | HCID 178517447 | — |
Reaction Steps
A mixture of 10.0 g of 2-amino-3-(o-chlorobenzoyl)thiophene, 14.26 g of ethyl carbamate and 0.86 g of zinc chloride is heated at 200°C for 30 minutes. After cooling, the reaction mixture is well washed with chloroform, then with water, and filtered to give crude crystals of 4-(o-chlorophenyl)-1,2-dihydrothieno[2,3-d]pyrimidin-2-one.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
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| Patent number | US03957783 |
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| Source dataset | uspto-grants-1976_05 |
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| ORD ID | ord-f9f971a5e05a4deaa3503cbbf3d40f2c |
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| Source note | uspto-grants-1976_05 |
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