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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2307843Generated: November 2, 2026

Water → HCID 22602788, compound

https://huagongshe.com/reaction/2307843

Reaction equation

Participants

RoleNameHCIDCharge
ReactantWaterHCID 962—
ReactantSodium HydroxideHCID 14798—
ReactantAcetamidine monohydrochlorideHCID 67170—
ReactantHCID 22602785HCID 22602785—
SolventDichloromethaneHCID 6344—
ProductHCID 22602788HCID 2260278823.5%

Reaction Conditions

Temperature5 °C

Reaction Steps

1-Imino-ethanamine hydrochloride (1:1) (0.08 mol) was added at 0° C. to a stirring mixture of intermediate 1 (0.07 mol) in DCM (300 ml). Sodium hydroxide (50%, 20 ml) was added dropwise at 0° C. The mixture was stirred at 5° C. for 1 hour. Water (300 ml) and DCM (300 ml) were added. The mixture was separated into its layers. The aqueous layer was washed twice with DCM. The combined organic layer was dried, filtered and the solvent was evaporated. The residue was purified over silica gel on a glass filter (eluent: DCM). Two pure fractions were collected and their solvents were evaporated, yielding 3.5 g of 2-chloro-4-(3-methyl-1,2,4-thiadiazol-5-yl)pyrimidine (intermediate 2).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06833369B2
Source datasetuspto-grants-2004_12
ORD IDord-db7fc0dae1394368877093d98e9a46d4
Source noteuspto-grants-2004_12