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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 354843Generated: October 25, 2026

Formamide → 4-Aminoquinazoline

https://huagongshe.com/reaction/354843

Reaction equation

Participants

RoleNameHCIDCharge
ReactantFormamideHCID 713—
Reactant2-AminobenzonitrileHCID 72913—
Product4-AminoquinazolineHCID 84759—

Reaction Conditions

Temperature220 °C

Reaction Steps

A mixture of o-aminobenzonitrile (22.58 g) and formamide (96 ml) was refluxed for 2 hours at 220° C. After the resultant mixture was cooled to ambient temperature, precipitated crystals were separated by filtration, washed twice with a small volume of water and dried under reduced pressure to give crystalline 4-aminoquinazoline (17.0 g).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04377580
Source datasetuspto-grants-1983_03
ORD IDord-5deb0920a34d494fb43b1e7b80c6165f
Source noteuspto-grants-1983_03