HuagongsheHuagongshe Chemistry Print Report · For research reference only
3,4-dihydro-2H-pyran → Tetrabromobisphenol A bis-tetrahydropyranyl ether
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | 3,4-dihydro-2H-pyran | HCID 8080 | — |
| Reactant | Potassium Carbonate | HCID 11430 | — |
| Reactant | 2,3,5,6-Tetrabromo-4-[2-(4-hydroxyphenyl)propan-2-yl]phenol | HCID 54240982 | — |
| Solvent | Tetrahydrofuran | HCID 8028 | — |
| Product | Tetrabromobisphenol A bis-tetrahydropyranyl ether | HCID 54165907 | — |
Reaction Steps
56.6 g of tetrabromobisphenol A are dissolved in 50 ml of THF. After addition of 17.5 g of dihydropyran and 0.25 g of Amberlyst, the mixture is refluxed for 3 hours, cooled, neutralized by addition of 5 g of potassium carbonate, stirred for a further hour, filtered and evaporated to dryness: oil. NMR: 7.27 ppm (arom.), 6.0 ppm (t, acetal), 1.57 ppm (methyl).
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US05403697 |
| Source dataset | uspto-grants-1995_04 |
| ORD ID | ord-eeaa11de1f61461d955e69eb68523400 |
| Source note | uspto-grants-1995_04 |