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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2085411Generated: November 3, 2026

Hydrochloric Acid → 4-(4-Nitrophenyl)-1,2,3,6-tetrahydropyridine

https://huagongshe.com/reaction/2085411

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
Reactant2-methyl-N-[3-(4-piperidyl)phenyl]propanamideHCID 16757255—
Reactanttert-butyl 5,6-dihydro-4-(4-nitrophenyl)pyridine-1(2H)-carboxylateHCID 22049016—
Solvent1,4-DioxaneHCID 31275—
Product4-(4-Nitrophenyl)-1,2,3,6-tetrahydropyridineHCID 22048783—

Reaction Steps

4-(4-Nitrophenyl)-1,2,3,6-tetrahydropyridine was prepared by a similar procedure to that used for the preparation of 2-methyl-N-[3-(4-piperidinyl)phenyl]propanamide using HCl gas and tert-Butyl 4-(4-Nitrophenyl)-3,6-dihydro-1(2H)-pyridinecarboxylate (130 mg) in dioxane (5.0 mL) at room temperature. The reaction mixture was concentrated in vacuo to give the crude product (69.8 mg) that used in the next reaction without further purification.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06720324B2
Source datasetuspto-grants-2004_04
ORD IDord-53831d3c900142c2b258c9cff2735c9e
Source noteuspto-grants-2004_04