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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 879158Generated: October 30, 2026

p-Toluenesulfonic acid → HCID 59226560, compound

https://huagongshe.com/reaction/879158

Reaction equation

Participants

RoleNameHCIDCharge
Reactantp-Toluenesulfonic acidHCID 6101—
ReactantEthyl AcetateHCID 8857—
Reactant5-Methyl-3-(3-nitropyridin-4-yl)cyclohex-2-enolHCID 67130710—
Solvent1,4-DioxaneHCID 31275—
ProductHCID 59226560HCID 5922656068%

Reaction Conditions

Temperature100 °C

Reaction Steps

To a solution of (+/−)-5-methyl-3-(3-nitropyridin-4-yl)cyclohex-2-enol (1.0 equiv.) in dioxane (0.1 M) was added p-TSA (1.0 equiv.), and the reaction was stirred at 100° C. for 3 h. The solution was cooled to room temperature, then passed through a pad of neutral alumina eluting with EtOAc to yield (+/−)-4-(5-methylcyclohexa-1,3-dienyl)-3-nitropyridine as a yellow oil in 68% yield. LC/MS=217.1 (M+H), LC=3.908 min.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08987457B2
Source datasetuspto-grants-2015_03
ORD IDord-9b21d16dc2b84aa1a4bb9825017a46d3
Source noteuspto-grants-2015_03