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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 524163Generated: October 27, 2026

2-Naphthalenesulfonyl chloride → 5-(7-Methoxy-2,2-dimethyl-2,3-dihydro-1-benzofuran-4-yl)-4,4-dimethyl-2-[1-(naphthalen-2-ylsulfonyl)piperidin-4-yl]-2,4-dihydro-3H-pyrazol-3-one

https://huagongshe.com/reaction/524163

Reaction equation

Participants

RoleNameHCIDCharge
Reactant2-Naphthalenesulfonyl chlorideHCID 7125—
Reactant5-(7-methoxy-2,2-dimethyl-2,3-dihydro-1-benzofuran-4-yl)-4,4-dimethyl-2-(piperidin-4-yl)-2,4-dihydro-3H-pyrazol-3-one hydrochlorideHCID 66616590—
Product5-(7-Methoxy-2,2-dimethyl-2,3-dihydro-1-benzofuran-4-yl)-4,4-dimethyl-2-[1-(naphthalen-2-ylsulfonyl)piperidin-4-yl]-2,4-dihydro-3H-pyrazol-3-oneHCID 46203678—

Reaction Steps

The title compound is prepared analogously as described for GP1 using 5-(7-methoxy-2,2-dimethyl-2,3-dihydro-1-benzofuran-4-yl)-4,4-dimethyl-2-(piperidin-4-yl)-2,4-dihydro-3H-pyrazol-3-one hydrochloride (compound B5*HCl) and naphthalene-2-sulfonyl chloride as starting compounds. The crude product is purified by crystallization from methanol to yield the title compound.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09340522B2
Source datasetuspto-grants-2016_05
ORD IDord-3e46bf779dc146368ebb2215f5aa2ce7
Source noteuspto-grants-2016_05