Back
HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 322065Generated: October 30, 2026

Water → 3-Amino-4-[6-(4-Pyridyl)-2-Pyridylamino]-3-Cyclobutene-1,2-Dione

https://huagongshe.com/reaction/322065

Reaction equation

Participants

RoleNameHCIDCharge
ReactantWaterHCID 962—
Reactant3-Amino-4-n-butoxy-3-cyclobutene-1,2-dioneHCID 14545034—
Reactant6-(Pyridin-4-yl)pyridin-2-amineHCID 14964571—
SolventPyridineHCID 1049—
Product3-Amino-4-[6-(4-Pyridyl)-2-Pyridylamino]-3-Cyclobutene-1,2-DioneHCID 2200993513.8%

Reaction Steps

A stirred solution of 2-amino-6-(4-pyridyl)pyridine (0.34 g) and 3-amino-4-n-butoxy-3-cyclobutene-1,2-dione (0.34 g) in pyridine (2 ml) is heated under reflux for 8 hours. The cool mixture is treated with water (15 ml) and the mixture stirred for 1 hour. The solid is filtered, washed with water, ethanol and ether, charcoaled and recrystallised from dimethylformamide to give 73 mg of the title compound, mp >340° C.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06211220B1
Source datasetuspto-grants-2001_04
ORD IDord-ef7a3c74db45479892f0006a858ed7bd
Source noteuspto-grants-2001_04