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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2176990Generated: October 30, 2026

Carbonic acid-guanidine (1:1) → HCID 11703778, compound

https://huagongshe.com/reaction/2176990

Reaction equation

Participants

RoleNameHCIDCharge
ReactantCarbonic acid-guanidine (1:1)HCID 286947—
ReactantHCID 66924160HCID 66924160—
SolventDimethylacetamideHCID 31374—
ProductHCID 11703778HCID 1170377824.4%

Reaction Conditions

Temperature135 °C

Reaction Steps

Guanidine carbonate (792 mg; 4.4 mmol) is suspended in a solution of 2-[2-(4-Chlorophenyl)-3-methoxymethoxypropoxy]-6-fluorobenzonitrile (769 mg; 2.20 mmol) in DMA, and heated to 135° C. for 8 hours. The solution is cooled to RT overnight and placed in a freezer at 4° C. for 24 hours. The resulting black solids are removed by filtration through paper. The filtrate is concentrated under vacuum, and purified by column chromatography (10% MeOH/EtOAc). The collected fractions are dried to give 209 milligrams of 5-[2-(4-chlorophenyl)-3-methoxymethoxy propoxy]-quinazoline-2,4-diamine.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09067897B2
Source datasetuspto-grants-2015_06
ORD IDord-b2147532edfe42938eefa6cc87c39923
Source noteuspto-grants-2015_06