HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1445534Generated: November 1, 2026
Ethanol → 4-[(4-(Hydroxydiphenylmethyl)-1-piperidinyl]-1-hydroxybutyl]-alpha,alpha-dimethylbenzeneacetic acid hydrochloride hydrate
https://huagongshe.com/reaction/1445534
Participants
| Role | Name | HCID | Charge |
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| Reactant | Ethanol | HCID 702 | — |
| Reactant | Fexofenadine Hydrochloride | HCID 63002 | — |
| Solvent | Water | HCID 962 | — |
| Product | 4-[(4-(Hydroxydiphenylmethyl)-1-piperidinyl]-1-hydroxybutyl]-alpha,alpha-dimethylbenzeneacetic acid hydrochloride hydrate | HCID 11613748 | 181.9% |
Reaction Steps
Treat 4-[4-[4-(hydroxydiphenylmethyl)-1-piperidinyl]-1-hydroxybutyl]-α,α-dimethylbenzeneacetic acid hydrochloride (Form I) (2.0 g) with ethanol (4 mL) and deionized water (20 mL). Heat at 80° C. until a solution is formed and then stir at room temperature for 23 hours. Filter the resulting slurry, wash with water (2×10 mL) and dry under vacuum at 35° C. overnight to give the title compound (1.88 g); mp 100-105° C.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
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| Patent number | US07666881B2 |
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| Source dataset | uspto-grants-2010_02 |
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| ORD ID | ord-dba5cf92a178439ca346956d8f648582 |
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| Source note | uspto-grants-2010_02 |
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