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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1668988Generated: November 1, 2026

Hydrazine hydrate (1:1) → HCID 57214671, compound

https://huagongshe.com/reaction/1668988

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrazine hydrate (1:1)HCID 24654—
ReactantHCID 67338907HCID 67338907—
SolventAcetic AcidHCID 176—
SolventWaterHCID 962—
ProductHCID 57214671HCID 57214671—

Reaction Conditions

Temperature80 °C

Reaction Steps

To a solution of 2-tert-butyl-3-hydroxy-5-methylisoindolin-1-one (10.54 g, 48.1 mmol) in AcOH (250 ml) charged to a 500 mL round bottom and stirred at 80° C., hydrazine hydrate (3.51 ml, 72.1 mmol) was added. The reaction mixture was stirred at 80° C. for 90 min. The reaction mixture was then cooled and diluted with water and extracted with 4 L DCM. The organics were washed with brine, dried over magnesium sulfate and concentrated under vacuum to give 6-methylphthalazin-1(2H)-one. MS (M+H)+ 161.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07989461B2
Source datasetuspto-grants-2011_08
ORD IDord-2225d4dd32b945d9b7a21767bea4ea1d
Source noteuspto-grants-2011_08