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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 524189Generated: October 31, 2026

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

https://huagongshe.com/reaction/524189

Reaction equation

Participants

RoleNameHCIDCharge
ReactantIsoquinoline-4-carboxylic acidHCID 459768—
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-4-ylcarbonyl)piperidin-4-yl]-4,4-dimethyl-2,4-dihydro-3H-pyrazol-3-oneHCID 46205298—

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-4-carboxylic acid as starting compounds. The crude product is purified by chromatography (amino phase silica gel and DCM/Methanol=97:3) to yield the title compound.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09340522B2
Source datasetuspto-grants-2016_05
ORD IDord-4db004a25ba242afbc6c102e508e1268
Source noteuspto-grants-2016_05