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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1914195Generated: November 4, 2026

6-Hydroxy-1-naphthoic acid → 5-(3,4-Dimethoxyphenyl)-2-{1-[(6-hydroxynaphthalen-1-yl)carbonyl]piperidin-4-yl}-4,4-dimethyl-2,4-dihydro-3H-pyrazol-3-one

https://huagongshe.com/reaction/1914195

Reaction equation

Participants

RoleNameHCIDCharge
Reactant6-Hydroxy-1-naphthoic acidHCID 5463800—
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-[(6-hydroxynaphthalen-1-yl)carbonyl]piperidin-4-yl}-4,4-dimethyl-2,4-dihydro-3H-pyrazol-3-oneHCID 67366492—

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 6-hydroxynaphthalene-1-carboxylic acid as starting compounds. The crude product is purified by chromatography (amino phase silica gel and DCM) to yield the title compound.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08609848B2
Source datasetuspto-grants-2013_12
ORD IDord-8c6ec113ff484bb6848ce52b68d7d0a0
Source noteuspto-grants-2013_12