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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2372613Generated: October 28, 2026

Ethanol → 1-(Benzothiophen-2-yl)piperazine

https://huagongshe.com/reaction/2372613

Reaction equation

Participants

RoleNameHCIDCharge
ReactantEthanolHCID 702—
ReactantPiperazineHCID 4837—
Reactant2-ChlorobenzothiazoleHCID 11987—
Product1-(Benzothiophen-2-yl)piperazineHCID 19064974—

Reaction Steps

2-Chlorobenzothiazole (5 g) is heated in ethanol (75 ml) with piperazine (3.05 g) for 20 h. The mixture is partitioned between methylene chloride/ether and aqueous sodium bicarbonate. The organic phase is separated, dried with sodium sulfate and concentrated to give the title compound.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS05099019
Source datasetuspto-grants-1992_03
ORD IDord-ed96206c87d34ecc8dcccd71bc35edca
Source noteuspto-grants-1992_03