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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1707630Generated: November 2, 2026

Isonicotinic Acid → HCID 15289251, compound

https://huagongshe.com/reaction/1707630

Reaction equation

Participants

RoleNameHCIDCharge
ReactantIsonicotinic AcidHCID 5922—
Reactant4-MethylmorpholineHCID 7972—
ReactantIsobutyl chloroformateHCID 62365—
Reactanttert-Butyl piperazine-1-carboxylateHCID 143452—
SolventDichloromethaneHCID 6344—
SolventEthyl AcetateHCID 8857—
ProductHCID 15289251HCID 15289251—

Reaction Conditions

Temperature-78 °C

Reaction Steps

A sample of 4-pyridinecarboxylic acid (1.32 g, 10.7 mmol) was dissolved in 50 mL of CH2Cl2. To this solution under N2 was added N-methylmorpholine (1.21 mL, 11.0 mmol) before it was cooled to -78° C. and isobutylchloroformate (1.39 mL, 10.7 mmol) was added. The reaction was allowed to warm to 0° C. and stirred at this temperature for 30 minutes before it was cooled again to -78° C. and t-butyloxycarbonyl piperazine (2.0 g, 10.7 mmol) was added. The mixture was allowed to warm to room temperature and stirred for 18 hours. All solvent was removed under reduced pressure to give a residue that was dissolved in EtOAc, washed with saturated NaHCO3 and brine, and dried (Na2SO4). After all solvent was removed in vacuo, the residue was chromatographed to generate 1.3 g of the title compound.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS05354747
Source datasetuspto-grants-1994_10
ORD IDord-dec968600cd248a1979a1ff897fceac8
Source noteuspto-grants-1994_10