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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1684790Generated: November 2, 2026

Hydrochloric Acid → HCID 21200663, compound

https://huagongshe.com/reaction/1684790

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
ReactantWaterHCID 962—
Reactant4-PhenylpiperidineHCID 69873—
ReactantHCID 21200576HCID 21200576—
SolventDiethyl EtherHCID 3283—
SolventDimethylformamideHCID 6228—
SolventDichloromethaneHCID 6344—
ProductHCID 21200663HCID 2120066379.4%

Reaction Conditions

Temperature80 °C

Reaction Steps

A mixture of 1.5 g of the compound obtained in step B of EXAMPLE 21 and 1.03 g of 4-phenylpiperidine in 3 ml of DMF is heated at 80° C. for 3 hours. After cooling, the reaction mixture is poured into water and extracted with AcOEt, the organic phase is washed with water and dried over MgSO4 and the solvent is evaporated off under vacuum. The residue is chromatographed on silica H using a DCM/MeOH mixture (100/1; v/v) as the eluent. The product obtained is dissolved in DCM, a saturated solution of gaseous HCl in ether is added until the pH is 1, and the solvent is evaporated off under vacuum to give 0.7 g of the expected product after crystallization from a DCM/pentane mixture.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS05641777
Source datasetuspto-grants-1997_06
ORD IDord-529fdb3075c6495e906d2ce0c9c55028
Source noteuspto-grants-1997_06