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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1250592Generated: October 31, 2026

Acetic Anhydride → 4-Acetylamino-2-allylamino-6-nitroquinazoline

https://huagongshe.com/reaction/1250592

Reaction equation

Participants

RoleNameHCIDCharge
ReactantAcetic AnhydrideHCID 7918—
ReactantSodium HydroxideHCID 14798—
ReactantSodium AcetateHCID 517045—
Reactant2-Allylamino-4-amino-6-nitroquinazolineHCID 18326436—
SolventTetrahydrofuranHCID 8028—
Product4-Acetylamino-2-allylamino-6-nitroquinazolineHCID 1832638842.8%

Reaction Steps

300 mg (1.22 mmol) of 2-allylamino-4-amino-6-nitroquinazoline was dissolved in 5 ml of THF, and then 5.0 g (29.38 mmol) of acetic anhydride and 30 mg (0.37 mmol) of sodium acetate were added thereto, followed by stirring at room temperature for 12 hours. The reaction solution was neutralized with a 1 N aqueous sodium hydroxide solution. Crystals thus precipitated were filtered, followed by washing with water and drying to give 150 mg (42.7%) of the title compound.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06339089B2
Source datasetuspto-grants-2002_01
ORD IDord-61697d17430546e08f2afd113703fad8
Source noteuspto-grants-2002_01