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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 48180Generated: October 29, 2026

Water → 4-(4-Acetylaminophenyl)-1,2-Dihydro-6-Methylthiophthalazine

https://huagongshe.com/reaction/48180

Reaction equation

Participants

RoleNameHCIDCharge
ReactantWaterHCID 962—
ReactantSodium BicarbonateHCID 516892—
ReactantSodium cyanoborohydrideHCID 5003444—
Reactant1-(4-Acetylaminophenyl)-7-MethylthiophthalazineHCID 9944490—
SolventAcetic AcidHCID 176—
Product4-(4-Acetylaminophenyl)-1,2-Dihydro-6-MethylthiophthalazineHCID 1298617474.2%

Reaction Steps

To a solution of the phthalazine 7 (130 mg, 0.42 mmol) in acetic acid (7 mL) was added NaBH3CN in portions. After stirring for 15 min, water was added. The aqueous phase was neutralized by NaHCO3, and then extracted with DCM. The combined organic phase was dried over Na2SO4. Removal of the solvent afforded the product (97 mg, 74%) which can be used directly for next step.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06703390B2
Source datasetuspto-grants-2004_03
ORD IDord-9a7efb84837a45f191150388858196ea
Source noteuspto-grants-2004_03