HuagongsheHuagongshe Chemistry Print Report · For research reference only
Hydrochloric Acid → 3,4-Dihydro-4-oxo-2-(pyridin-3-yl)-6-methylthieno[2,3-d]pyrimidine
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Hydrochloric Acid | HCID 313 | — |
| Reactant | 1,4-Dioxane | HCID 31275 | — |
| Reactant | Ethyl 2-Amino-5-methylthiophene-3-carboxylate | HCID 4062885 | — |
| Reactant | HCID 23287905 | HCID 23287905 | — |
| Product | 3,4-Dihydro-4-oxo-2-(pyridin-3-yl)-6-methylthieno[2,3-d]pyrimidine | HCID 23287906 | — |
Reaction Steps
2-Amino-5-methyl-3-ethoxycarbonyl-thiophene (5 g) is solved with 3-cyanopyrimidine (2.7 g) in dioxane (40 ml). Then gaseous HCl is conducted through the solution for 5 hours. The usual workup yields 3,4-dihydro-4-oxo-2-(pyridin-3-yl)-6-methyl-thieno-[2,3-d]-pyrimidine (6 g).
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US06133271 |
| Source dataset | uspto-grants-2000_10 |
| ORD ID | ord-d17f1305f2b34cccbcbb823dc03f1a12 |
| Source note | uspto-grants-2000_10 |