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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 524179Generated: October 26, 2026

Isoquinoline-1-carboxylic acid → 5-(3,4-Dimethoxyphenyl)-2-[1-(isoquinolin-1-ylcarbonyl)piperidin-4-yl]-4,4-dimethyl-2,4-dihydro-3H-pyrazol-3-one

https://huagongshe.com/reaction/524179

Reaction equation

Participants

RoleNameHCIDCharge
ReactantIsoquinoline-1-carboxylic acidHCID 68092—
Reactant5-(3,4-dimethoxyphenyl)-4,4-dimethyl-2-piperidin-4-yl-2,4-dihydro-3H-pyrazol-3-one hydrochlorideHCID 66616406—
Product5-(3,4-Dimethoxyphenyl)-2-[1-(isoquinolin-1-ylcarbonyl)piperidin-4-yl]-4,4-dimethyl-2,4-dihydro-3H-pyrazol-3-oneHCID 46204655—

Reaction Steps

The title compound is prepared analogously as described for GP2-WU2 using 5-(3,4-dimethoxyphenyl)-4,4-dimethyl-2-(piperidin-4-yl)-2,4-dihydro-3H-pyrazol-3-one (compound B1) and isoquinoline-1-carboxylic acid as starting compounds. The crude product is purified by chromatography (silica gel and DCM/diethyl ether/methanol=5:5:1) to yield the title compound.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09340522B2
Source datasetuspto-grants-2016_05
ORD IDord-e381839f7e0a4628a331d1a40bd0c5d9
Source noteuspto-grants-2016_05