HuagongsheHuagongshe Chemistry Print Report · For research reference only
4-(4-Chromanone-3-yl)-2,4-dioxobutyric acid → 4-Oxo-4H, 5H-[1]benzopyrano [4,3-b]pyran-2-carboxylic Acid Methyl Ester
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | 4-(4-Chromanone-3-yl)-2,4-dioxobutyric acid | HCID 12677754 | — |
| Reactant | 4-(4-Chromanon-3-yl)-2,4-dioxobutyric acid ethyl ester | HCID 12677755 | — |
| Product | 4-Oxo-4H, 5H-[1]benzopyrano [4,3-b]pyran-2-carboxylic Acid Methyl Ester | HCID 12677756 | — |
Reaction Steps
In the same manner as described above in (c) but replacing 4-(4-chromanone-3-yl)-2,4-dioxobutyric acid ethyl ester with an equivalent amount of the corresponding acid, 4-(4-chromanone-3-yl)-2,4-dioxobutyric acid [described above in (b)], the title compound is obtained.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US04105778 |
| Source dataset | uspto-grants-1978_08 |
| ORD ID | ord-9717b09c9e2742598f3e1ff3f2aa1860 |
| Source note | uspto-grants-1978_08 |