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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1050633Generated: November 1, 2026

Sulfuric Acid → 4-[[4-[N,N-bis(hydroxylethyl)amino]phenyl]azo]pyridine

https://huagongshe.com/reaction/1050633

Reaction equation

Participants

RoleNameHCIDCharge
ReactantSulfuric AcidHCID 1118—
Reactant4-AminopyridineHCID 1727—
ReactantN-Phenyl diethanolamineHCID 8416—
ReactantSodium NitrateHCID 24268—
Product4-[[4-[N,N-bis(hydroxylethyl)amino]phenyl]azo]pyridineHCID 18551956—

Reaction Steps

4-[[4-[N,N-Bis(hydroxylethyl)amino]phenyl]azo]pyridine (1) was prepared according to procedures described in Lin et al., J. Am. Chem. Soc., 118: 8034 (1996). Specifically, pyridin-4-amine was reacted with a mixture of sodium nitrate and sulfuric acid, followed by reaction with 2,2′-(phenylazanediyl)diethanol.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09385332B2
Source datasetuspto-grants-2016_07
ORD IDord-8f64887bf90146b6bf5d75548b707b7d
Source noteuspto-grants-2016_07