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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2176960Generated: October 31, 2026

Carbonic acid-guanidine (1:1) → HCID 2824489, compound

https://huagongshe.com/reaction/2176960

Reaction equation

Participants

RoleNameHCIDCharge
ReactantCarbonic acid-guanidine (1:1)HCID 286947—
Reactant2-Fluoro-6-(4-methylbenzyloxy)benzonitrileHCID 2737386—
SolventDimethylacetamideHCID 31374—
ProductHCID 2824489HCID 282448937.8%

Reaction Steps

2-Fluoro-6-(4-methylbenzyloxy)benzonitrile (241.3 mg; 1 mmol) and guanidine carbonate (180.2 mg; 1 mmol) were heated at 145° C. in dimethyl acetamide for 7 hours. The solvent was removed. Purification by recrystallization in hot ethanol/water yielded 106 milligrams of 5-(4-methylbenzyloxy)quinazoline-2,4-diamine.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09067897B2
Source datasetuspto-grants-2015_06
ORD IDord-653a3df0e3514ecbb7a5705957d014ee
Source noteuspto-grants-2015_06