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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 334099Generated: October 25, 2026

Sulfuric Acid → 5-Amino-1-methyl-1H-imidazole-4-carboxamide

https://huagongshe.com/reaction/334099

Reaction equation

Participants

RoleNameHCIDCharge
ReactantSulfuric AcidHCID 1118—
Reactant5-amino-1-methyl-1H-imidazole-4-carbonitrileHCID 11051635—
Product5-Amino-1-methyl-1H-imidazole-4-carboxamideHCID 6420287—

Reaction Steps

The cyano group of 5-amino-1-methyl-1H-imidazole-4-carbonitrile 1 is hydrolyzed to the amide in sulfuric acid to give 5-amino-1-methyl-1H-imidazole-4-carboxamide 2 which was cyclized with urea to 9-methyl-1H-purine-2,6(3H,9H)-dione 3. Chlorination of 3 yields 2,6-dichloro-9-methyl-9H-purine 4.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08883799B2
Source datasetuspto-grants-2014_11
ORD IDord-21dc7c8c8c4445b49ac0c7974c67d7ff
Source noteuspto-grants-2014_11