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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2231004Generated: October 31, 2026

Hydrochloric Acid → HCID 22724458, compound

https://huagongshe.com/reaction/2231004

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
ReactantSodium BicarbonateHCID 516892—
ReactantHCID 22724164HCID 22724164—
CatalystIronHCID 23925—
SolventEthanolHCID 702—
ProductHCID 22724458HCID 2272445878%

Reaction Conditions

Temperature80 °C

Reaction Steps

A mixture of 2-[3-(2-naphthoylamino)phenylamino]-3-nitropyridine (948 mg), iron powder (0.55 g) and hydrochloric acid (35%, 2 ml) in ethanol (8 ml) was stirred at 80° C. for 30 minutes. Then the mixture was poured into aqueous sodium bicarbonate and extracted with ethyl acetate twice. The combined organic phase was washed with aqueous sodium bicarbonate and brine, dried over magnesium sulfate and concentrated. The resultant solid was collected and washed with isopropyl ether to give 3-amino-2-[3-(2-naphthoylamino)phenylamino]pyridine (682 mg).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06426345B1
Source datasetuspto-grants-2002_07
ORD IDord-cb6080cb1db54ac4960895b263d41c4b
Source noteuspto-grants-2002_07