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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 620189Generated: October 29, 2026

Hydrazine hydrate (1:1) → 6-(2-amino-indan-5-yl)-4,5-dihydropyridazin-3(2H)-one

https://huagongshe.com/reaction/620189

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrazine hydrate (1:1)HCID 24654—
ReactantMethyl 4-(2-amino-indan-5-yl)-4-oxobutyrate hydrochlorideHCID 23050575—
SolventAcetic AcidHCID 176—
Product6-(2-amino-indan-5-yl)-4,5-dihydropyridazin-3(2H)-oneHCID 14071499—

Reaction Steps

8.5 g (0.17 mol) of 99% hydrazine hydrate are added to 10.0 g (0.035 mol) of methyl 4-(2-amino-indan-5-yl)-4-oxobutyrate hydrochloride in glacial acetic acid and the mixture is boiled for 30 minutes. The mixture is evaporated in vacuo, the residue is dissolved in water and the reaction product is precipitated by neutralisation with sodium hydroxide.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04820705
Source datasetuspto-grants-1989_04
ORD IDord-9c5bb891a85840e4aad887e05035831e
Source noteuspto-grants-1989_04