HuagongsheHuagongshe Chemistry Print Report · For research reference only
Acetic Acid → HCID 21270138, compound
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Acetic Acid | HCID 176 | — |
| Reactant | Sulfuric Acid | HCID 1118 | — |
| Reactant | Tetrahydrofuran | HCID 8028 | — |
| Reactant | HCID 21270142 | HCID 21270142 | — |
| Solvent | Dioxan ethanol | HCID 22560076 | — |
| Product | HCID 21270138 | HCID 21270138 | — |
Reaction Steps
As example 39, but using 7,8-dihydroxy-3-(3-chlorophenyl)-4H-1-benzopyran-4-one (1.2 g) instead of 6,7-dihydroxy-3-(3-methylphenyl)-4H-1-benzopyran-4-one. Tetrahydrofuran and acetic acid are used instead of dioxan/ethanol and sulphuric acid. The resulting oil crystallizes to give 3,4-dihydro-7,8-dihydroxy-3-(3-chlorophenyl)-2H-1-benzopyran, m.p. 99°-101°.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US04814346 |
| Source dataset | uspto-grants-1989_03 |
| ORD ID | ord-c179537ccfde4fd28bbf08a866733b77 |
| Source note | uspto-grants-1989_03 |