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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 839500Generated: November 2, 2026

Phenylhydrazine → 2-phenylphthalazin-1(2h)-one

https://huagongshe.com/reaction/839500

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPhenylhydrazineHCID 7516—
Reactant2-(dibromomethyl)benzoic acidHCID 345553—
Product2-phenylphthalazin-1(2h)-oneHCID 23562630.1%

Reaction Steps

α,α-dibromo-o-toluic acid (29.4 g) and phenylhydrazine (34.6 g) were allowed to react as in Example 4. There was obtaoined 6.7 g (yield: 30%) of 2-phenyl-1-phthalazinone having a melting poin of 104°-105° C.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04096143
Source datasetuspto-grants-1978_06
ORD IDord-08dba768ac024693b221cbd8dfac69ec
Source noteuspto-grants-1978_06