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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2229162Generated: October 29, 2026

Isatoic Anhydride → Semicarbazide, 1-(o-aminobenzoyl)-3-thio-

https://huagongshe.com/reaction/2229162

Reaction equation

Participants

RoleNameHCIDCharge
ReactantIsatoic AnhydrideHCID 8359—
ReactantThiosemicarbazideHCID 2723789—
SolventDimethylformamideHCID 6228—
ProductSemicarbazide, 1-(o-aminobenzoyl)-3-thio-HCID 305732746.6%

Reaction Conditions

Temperature70 °C

Reaction Steps

Isatoic anhydride (4.9 g) and thiosemicarbazide (2.8 g) were dissolved in 30 ml of DMF and the resulting mixture was stirred 20 h at 60 to 80° C. The solvent was removed under reduced pressure and the residue was recrystallized from methanol and ethanol to give 2.94 g of 1-(2-aminobenzoyl)thiosemicarbazide.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06420367B1
Source datasetuspto-grants-2002_07
ORD IDord-fac37f686fbd41939c3484eb3d22f219
Source noteuspto-grants-2002_07