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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1871398Generated: November 2, 2026

p-Toluenesulfonic acid → (cis)-n-Propyl-4-(4-(3,4-dimethoxyphenyl)-1-oxo-4a,5,8,8a-tetrahydro-1H-phthalazin-2-yl)benzoate

https://huagongshe.com/reaction/1871398

Reaction equation

Participants

RoleNameHCIDCharge
Reactantp-Toluenesulfonic acidHCID 6101—
Reactant(cis)-4-(4-(3,4-Dimethoxyphenyl)-1-oxo-4a,5,8,8a-tetrahydro-1H-phthalazin-2-yl)benzoic acidHCID 86755612—
Solvent1-PropanolHCID 1031—
Product(cis)-n-Propyl-4-(4-(3,4-dimethoxyphenyl)-1-oxo-4a,5,8,8a-tetrahydro-1H-phthalazin-2-yl)benzoateHCID 131721941—

Reaction Steps

A solution of 1 g of compound 67 and 1 g of p-toluenesulfonic acid in 100 ml of 1-propanol was refluxed for 18 h. After evaporating the solvent, the title compound was crystallized from methanol. M.p. 100°-101° C.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06103718
Source datasetuspto-grants-2000_08
ORD IDord-bd5aa9988b384a37bc524b56fb56dbc3
Source noteuspto-grants-2000_08