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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 619328Generated: November 1, 2026

Piperidine → HCID 53884104, compound

https://huagongshe.com/reaction/619328

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPiperidineHCID 8082—
Reactant5-Bromo-3,4-dihydroxybenzaldehydeHCID 85405—
ReactantSulphonyl diacetonitrileHCID 142163—
SolventEthanolHCID 702—
ProductHCID 53884104HCID 538841046.3%

Reaction Steps

A mixture of 500 mg of 5-bromo-3,4-dihydroxybenzaldehyde and 700 mg of sulfonly diacetonitrile in 6 ml of ethanol was refluxed with few drops of piperidine for 4 hours. Ethanol was removed in rotavap and the mixture worked up with ethyl acetate, diluted acid and brine. A portion of the crude was then purified by HPLC on a C-18 column to provide about 50 mg of 2-(3-bromo-4,5-dihydroxyphenyl)-1-cyano-1-cyanomethylsulfonly ethene.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS05958959
Source datasetuspto-grants-1999_09
ORD IDord-7ce82f49b6b4482482eee56e659a480c
Source noteuspto-grants-1999_09