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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 275900Generated: October 31, 2026

Sulfuric Acid → HCID 178494689, compound

https://huagongshe.com/reaction/275900

Reaction equation

Participants

RoleNameHCIDCharge
ReactantSulfuric AcidHCID 1118—
ReactantGuanidineHCID 3520—
ReactantSodium MethoxideHCID 10942334—
ReactantEthyl 4-methoxy-2-methyl-3-oxobutanoateHCID 18315649—
SolventEthanolHCID 702—
SolventDimethylformamideHCID 6228—
ProductHCID 178494689HCID 17849468926.6%

Reaction Conditions

Temperature20 °C

Reaction Steps

Ethyl 2-methyl-3-oxo4-methoxybutyrate(10.5 g, 60 mmol) was added slowly to a suspension of sodium methoxide (6.5 g, 120 mmol) in dimethylformamide(10 ml) while maintaining the reaction temperature under 20° C. A solution of guanidine(5.7 g, 60 mmol) in ethanol was added to a reaction mixture, which was then refluxed for 5 hours, cooled to a room temperature, and neutralized with conc. sulfuric acid. The resulting solid was filtered and dried to give 2.7 g of the titled compound.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06352993B1
Source datasetuspto-grants-2002_03
ORD IDord-c600e8bf05234cdca9ee1a0678cdb5d4
Source noteuspto-grants-2002_03