HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2088914Generated: October 26, 2026
Hydrochloric Acid → 4-(1-(2-pyrrolidin-1-yl-ethyl)-4-(tetrahydro-pyran-4-yl)-1H-imidazol-2-yl)-piperidine
https://huagongshe.com/reaction/2088914
Participants
| Role | Name | HCID | Charge |
|---|
| Reactant | Hydrochloric Acid | HCID 313 | — |
| Reactant | Tert-butyl 4-[1-(2-pyrrolidin-1-ylethyl)-4-tetrahydropyran-4-yl-imidazol-2-yl]piperidine-1-carboxylate | HCID 67112170 | — |
| Solvent | Isopropanol | HCID 3776 | — |
| Product | 4-(1-(2-pyrrolidin-1-yl-ethyl)-4-(tetrahydro-pyran-4-yl)-1H-imidazol-2-yl)-piperidine | HCID 67111965 | 90% |
Reaction Steps
Add 5 M hydrogen chloride in isopropyl alcohol (112.7 mL, 5.0 eq) to a solution of tert-butyl 4-(1-(2-(pyrrolidin-1-yl)ethyl)-4-(tetrahydro-2H-pyran-4-yl)-1H-imidazol-2-yl)piperidine-1-carboxylate (132.0 g, 274.61 mmol) in isopropyl alcohol (549 mL). Stir the reaction mixture at 50° C. for six hours. Concentrate in vacuo. Dilute with water (1 L) and adjust the pH to 12 with 2 M aqueous sodium hydroxide. Extract with ethyl acetate and dichloromethane. Dry the organics over anhydrous magnesium sulfate and concentrate in vacuo to give 4-(1-(2-pyrrolidin-1-yl-ethyl)-4-(tetrahydro-pyran-4-yl)-1H-imidazol-2-yl)-piperidine (81.9 g, 90%). MS (ES) m/z=333 [M]+.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
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| Patent number | US08436002B2 |
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| Source dataset | uspto-grants-2013_05 |
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| ORD ID | ord-1d2efc162a98420688630761c1829d13 |
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| Source note | uspto-grants-2013_05 |
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