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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1264161Generated: October 31, 2026

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

https://huagongshe.com/reaction/1264161

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 teh residue was recrystallised from toluene to give the title product, m.p. 141-143° C.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06541630B1
Source datasetuspto-grants-2003_04
ORD IDord-eb84bb2ec50947fca003ae0fc60f3ea0
Source noteuspto-grants-2003_04