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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 236737Generated: October 26, 2026

p-Toluenesulfonic acid → Ethyl 4-[(2,6-dichlorophenyl)imino]-1-piperidinecarboxylate

https://huagongshe.com/reaction/236737

Reaction equation

Participants

RoleNameHCIDCharge
Reactantp-Toluenesulfonic acidHCID 6101—
ReactantO-XyleneHCID 7237—
Reactant2,6-DichloroanilineHCID 11846—
ReactantEthyl 4-oxo-1-piperidinecarboxylateHCID 34767—
SolventWaterHCID 962—
ProductEthyl 4-[(2,6-dichlorophenyl)imino]-1-piperidinecarboxylateHCID 23339072—

Reaction Steps

A mixture of 171 parts of ethyl 4-oxo-1-piperidinecarboxylate, 162 parts of 2,6-dichlorobenzenamine, 800 parts of dimethylbenzene and 1 part of 4-methylbenzenesulfonic acid is stirred and refluxed with water-separator. The reaction mixture is evaporated, yielding 250 parts of ethyl 4-[(2,6-dichlorophenyl)imino]-1-piperidinecarboxylate as a residue.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04157393
Source datasetuspto-grants-1979_06
ORD IDord-1d136abfa5994e3192fc77a159b4fa5d
Source noteuspto-grants-1979_06