HuagongsheHuagongshe Chemistry Print Report · For research reference only
4-Hydroxy-5-methoxy-1,3-benzenedicarboxaldehyde → 1,2-Dihydroxy-3,5-diformylbenzene
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | 4-Hydroxy-5-methoxy-1,3-benzenedicarboxaldehyde | HCID 18035 | — |
| Reactant | Phosphorus tribromide | HCID 24614 | — |
| Solvent | Dichloromethane | HCID 6344 | — |
| Product | 1,2-Dihydroxy-3,5-diformylbenzene | HCID 19069872 | — |
Reaction Steps
To a suspension containing 1.8 g of 4-hydroxy-5-methoxy-isophthalaldehyde in 20 ml of dichloromethane was added 35 ml of 1 molar PBr3 in dichloromethane. The mixture was allowed to stand over night at room temperature and poured into ice-water. Dichloromethane was evaporated in vacuo. After cooling the product was filtered and washed with water. Yield 0.94 g (57%), m.p. 192°-195° C.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US05112861 |
| Source dataset | uspto-grants-1992_05 |
| ORD ID | ord-f3cd86d51d6b4e82937df041f0da61c8 |
| Source note | uspto-grants-1992_05 |