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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2303291Generated: November 1, 2026

Hydrazine hydrate (1:1) → HCID 18618216, compound

https://huagongshe.com/reaction/2303291

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrazine hydrate (1:1)HCID 24654—
ReactantMethyl 3-amino-4-methylthiophene-2-carboxylateHCID 123584—
Solvent1-ButanolHCID 263—
ProductHCID 18618216HCID 18618216—

Reaction Steps

A solution of methyl 3-amino-4-methyl-2-thenoate (25 g) and hydrazine hydrate (20 ml) in butanol (150 ml) was heated under reflux for 18 hours. On cooling the solvent was removed and the residue was recrystallised from toluene to give the title product, m.p. 141-143° C.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06432964B1
Source datasetuspto-grants-2002_08
ORD IDord-d57aef1df9174abb907c820a1e63d0ec
Source noteuspto-grants-2002_08