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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 962446Generated: October 30, 2026

Hydrochloric Acid → HCID 19085439, compound

https://huagongshe.com/reaction/962446

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
ReactantBenzene, (2-bromoethoxy)-HCID 68526—
Reactant1-(2-(Piperidin-4-yl)ethyl)piperidineHCID 296292—
ReactantSodium BicarbonateHCID 516892—
SolventDiethyl EtherHCID 3283—
SolventDimethylformamideHCID 6228—
SolventTriethylamineHCID 8471—
ProductHCID 19085439HCID 19085439—

Reaction Steps

A mixture of 4-(2-piperidinoethyl)piperidine (3.27 g), 2-bromoethyl phenyl ether (3.35 g), triethylamine (2.3 ml) and DMF (50 ml) was heated on a steam bath for 16 hours. The mixture was worked up as described in Example 16. The crude solid hydrochloride was treated with sodium bicarbonate solution and the mixture extracted with dichloromethane to give the free base which was purified by flash chromatography on silica using methanol/triethylamine, 99:1 as the mobile phase. The oil obtained was dissolved in ether and acidified with ethereal hydrogen chloride to give 1-(2-phenoxyethyl)-4-(2-piperidinoethyl)piperidine dihydrochloride, m.p. 285° C.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS05760035
Source datasetuspto-grants-1998_06
ORD IDord-5404721bece540f397369fede4e85c5f
Source noteuspto-grants-1998_06