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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1990782Generated: October 30, 2026

O-Xylene → 6-(4-Methoxyphenyl)-3-phenyl-[1,2,4]triazolo[3,4-a]phthalazine

https://huagongshe.com/reaction/1990782

Reaction equation

Participants

RoleNameHCIDCharge
ReactantO-XyleneHCID 7237—
ReactantTriethylamine hydrochlorideHCID 11130—
ReactantBenzoylhydrazineHCID 11955—
Reactant1-Chloro-4-(4-methoxyphenyl)phthalazineHCID 2772390—
SolventWaterHCID 962—
Product6-(4-Methoxyphenyl)-3-phenyl-[1,2,4]triazolo[3,4-a]phthalazineHCID 198063099.3%

Reaction Steps

163 mg (1.2 mmol) of benzohydrazide and 165 mg (1.2 mmol) of triethylamine hydrochloride were added to a xylene solution (5 ml) of 271 mg (1.0 mmol) of the obtained 1-chloro-4-(4-methoxyphenyl)-phthalazine, and then stirred under reflux for 2 hours. Water was added to the reaction liquid, extracted with ethyl acetate, and the organic layer was washed with saturated saline water. This was dried with anhydrous sodium sulfate, and concentrated under reduced pressure to obtain 350 mg of a crude product of 6-(4-methoxyphenyl)-3-phenyl-[1,2,4]triazolo[3,4-a]phthalazine.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07645756B2
Source datasetuspto-grants-2010_01
ORD IDord-99c7ea2fee2d44129dd0051ae79afdc9
Source noteuspto-grants-2010_01