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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2082820Generated: October 31, 2026

Hydrazine hydrate (1:1) → 6-(4-chloro-3-hydroxyphenyl)-4,5-dihydro-3(2H)-pyridazinone

https://huagongshe.com/reaction/2082820

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrazine hydrate (1:1)HCID 24654—
Reactant3-(4-Chloro-3-hydroxybenzoyl)propionic acidHCID 20360737—
Product6-(4-chloro-3-hydroxyphenyl)-4,5-dihydro-3(2H)-pyridazinoneHCID 20360801—

Reaction Steps

3-(4-chloro-3-hydroxybenzoyl)propionic acid was cyclised with hydrazine hydrate in a similar manner to that described in Example 3 (i) to give 6-(4-chloro-3-hydroxyphenyl)-4,5-dihydro-3(2H)-pyridazinone.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04082843
Source datasetuspto-grants-1978_04
ORD IDord-0df25419c8b544e0b48269a19d1b66b0
Source noteuspto-grants-1978_04