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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 872069Generated: October 30, 2026

Hydrochloric Acid → HCID 178432750, compound

https://huagongshe.com/reaction/872069

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
ReactantAcetamidine monohydrochlorideHCID 67170—
ReactantMethyl 2-chloroacetoacetateHCID 107332—
ReactantSodium MethoxideHCID 10942334—
SolventMethanolHCID 887—
SolventDiethyl EtherHCID 3283—
ProductHCID 178432750HCID 178432750—

Reaction Conditions

Temperature80 °C

Reaction Steps

Sodium methoxide (328 mg, 6.08 mmol, 30% solution in MeOH) was added to a stirring suspension of acetamidine hydrochloride (191 mg, 2.03 mmol) and methyl 2-chloro-3-oxobutanoate (500 mg, 3.04 mmol) in MeOH (10.1 mL). The reaction mixture was heated to 80° C. for 3 hours and then cooled to room temperature. With stirring, the reaction was treated with 2N HCl in Et2O (50 mL), and then concentrated in vacuo. The resulting solid was suspended in 1:1 acetone/CH2Cl2, stirred vigorously for 10 mins, and the solids collected by filtration to afford the title compound as a light yellow solid. The isolated product was sufficiently pure to use in the subsequent step without further purification. LRMS m/z (M+H) 159.2 found, 159.0 required.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08975261B2
Source datasetuspto-grants-2015_03
ORD IDord-8af6867226f24b7ba9bee27f4950e6ff
Source noteuspto-grants-2015_03