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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 459832Generated: October 29, 2026

Benzenesulfonyl chloride → HCID 69352330, compound

https://huagongshe.com/reaction/459832

Reaction equation

Participants

RoleNameHCIDCharge
ReactantBenzenesulfonyl chlorideHCID 7369—
ReactantSodium CarbonateHCID 10340—
Reactant1,1-Dimethylethyl 4-(1,2,3,4-tetrahydro-5-isoquinolinyl)-1-piperazinecarboxylateHCID 21070947—
SolventDiethyl EtherHCID 3283—
ProductHCID 69352330HCID 69352330—

Reaction Steps

4-(1,2,3,4-Tetrahydroisoquinolin-5-yl)-piperazine-1-carboxylic acid tert-butyl ester as a viscous oil (150 mg) from Step 3 was reacted with benzenesulfonyl chloride (60 microliters) using the Schotten-Baumann procedure (50 mL diethyl ether (Et2O) and 50 mL aqueous sodium carbonate). The ether layer was separated, dried over MgSO4, and concentrated in vacuo. The residue was chromatographed to provide 1.76 mg of 4-(2-benzenesulfonyl-1,2,3,4-tetrahydroisoquinolin-5-yl)-piperazine-1-carboxylic acid tert-butyl ester as a white solid.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07196088B2
Source datasetuspto-grants-2007_03
ORD IDord-ccaec0c67ffe429a8212a12560212e66
Source noteuspto-grants-2007_03