HuagongsheHuagongshe Chemistry Print Report · For research reference only
Dimethyl acetylenedicarboxylate → HCID 86735049, compound
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Dimethyl acetylenedicarboxylate | HCID 12980 | — |
| Reactant | 3-Amino-6-chloro-4H-1-benzopyran-4-one | HCID 12343080 | — |
| Solvent | Methanol | HCID 887 | — |
| Product | HCID 86735049 | HCID 86735049 | 80% |
Reaction Steps
A mixture of 3-amino-6-chlorochromone (8 g, 0.041 mole) and dimethyl acetylenedicarboxylate (10.5 g, 0.074 mole) in methanol (150 ml) was stirred at room temperature for 2 days. The product was filtered off and washed with methanol. Recrystallization from ethyl acetate gave yellow crystals (11 g, 80%), m.p. 158°-160°.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US04046769 |
| Source dataset | uspto-grants-1977_09 |
| ORD ID | ord-fd6038b7847d4d47bbe5df8b28986452 |
| Source note | uspto-grants-1977_09 |