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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 524297Generated: October 25, 2026

1-(tert-Butoxycarbonyl)-4-(p-toluenesulfonyloxy)piperidine → 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

https://huagongshe.com/reaction/524297

Reaction equation

Participants

RoleNameHCIDCharge
Reactant1-(tert-Butoxycarbonyl)-4-(p-toluenesulfonyloxy)piperidineHCID 15734713—
Reactant5-(7-methoxy-2,2-dimethyl-2,3-dihydro-1-benzofuran-4-yl)-4,4-dimethyl-2,4-dihydro-3H-pyrazol-3-oneHCID 66616589—
Product5-(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-oneHCID 66616591—

Reaction Steps

Prepared analogously as described for the example B1 (Alternative 1) using 5-(7-methoxy-2,2-dimethyl-2,3-dihydro-1-benzofuran-4-yl)-4,4-dimethyl-2,4-dihydro-3H-pyrazol-3-one (compound C5) and tert-butyl 4-{[(4-methylphenyl)sulfonyl]oxy}piperidine-1-carboxylate (compound E1) as starting compounds resulting in the hydrochloride salt of the title compound. (compound B5*HCl)

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09340522B2
Source datasetuspto-grants-2016_05
ORD IDord-9833391843a8495b96ada534e8d3080b
Source noteuspto-grants-2016_05