HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 368906Generated: October 27, 2026
Benzenesulfonic acid, 4-methyl-, compd. with pyridine (1:1) → (2r)-3-(2,4-Difluorophenyl)-3-buten-2-ol
https://huagongshe.com/reaction/368906
Participants
| Role | Name | HCID | Charge |
|---|
| Reactant | Benzenesulfonic acid, 4-methyl-, compd. with pyridine (1:1) | HCID 466102 | — |
| Reactant | (3R)-2-(2,4-Difluorophenyl)-3-(3,4,5,6-tetrahydro-2H-pyran-2-yloxy)-1-butene | HCID 15483899 | — |
| Solvent | Ethanol | HCID 702 | — |
| Product | (2r)-3-(2,4-Difluorophenyl)-3-buten-2-ol | HCID 11805406 | — |
Reaction Steps
A mixture of crude 5b, and pyridinium-p-toluenesulfonate (35 g, 0.14 mole) in ethanol (1.2 L) is heated at 60° C. for 9 hours. The reaction mixture is concentrated in vacuo and co-evaporated with toluene. The residue is diluted with toluene and the resulting solid is removed by filtration. The filtrate is evaporated under reduced pressure to give the crude 6b as light brown oil.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
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| Patent number | US06133485 |
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| Source dataset | uspto-grants-2000_10 |
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| ORD ID | ord-e5a5bc27f3bc4716adf736fa8cff0b4b |
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| Source note | uspto-grants-2000_10 |
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