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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 329184Generated: October 31, 2026

3-Chlorobenzoic Acid → 5-(3-Chlorophenyl)-N-methyl-1,3,4-thiadiazol-2-amine

https://huagongshe.com/reaction/329184

Reaction equation

Participants

RoleNameHCIDCharge
Reactant3-Chlorobenzoic AcidHCID 447—
ReactantPhosphorus oxychlorideHCID 24813—
ReactantN-MethylhydrazinecarbothioamideHCID 2723853—
Solvent1,4-DioxaneHCID 31275—
Product5-(3-Chlorophenyl)-N-methyl-1,3,4-thiadiazol-2-amineHCID 15277968—

Reaction Steps

A well-stirred mixture of 125 g (0.8 mole) of 3-chlorobenzoic acid and 84 g (0.8 mole) of 4-methylthiosemicarbazide in 700 ml of dioxane was heated until the solution was homogeneous. Phosphorus oxychloride (123 g, 0.8 mole) was added dropwise to the resulting solution at a rate to maintain the dioxane at gentle reflux.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04020078
Source datasetuspto-grants-1977_04
ORD IDord-18289e23d0f945a08dbc233cdc067251
Source noteuspto-grants-1977_04