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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1062648Generated: November 2, 2026

Hydrochloric Acid → 4-PHENYL-1-PIPERAZINECARBOTHIOAMIDE

https://huagongshe.com/reaction/1062648

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
ReactantSodium HydroxideHCID 14798—
ReactantETHYL (4-PHENYL-1-PIPERAZINYL)CARBOTHIOYLCARBAMATEHCID 1518349—
Product4-PHENYL-1-PIPERAZINECARBOTHIOAMIDEHCID 205179863%

Reaction Conditions

Temperature80 °C

Reaction Steps

Ethyl (4-phenyl-1-piperazinyl)carbothioylcarbamate (13 g, 44 mmol) was added to conc. hydrochloric acid (44 mL) and the mixture was stirred at 80° C. for 2 h. The reaction mixture was made basic with 8N aqueous sodium hydroxide solution and the crystals were collected by filtration. The crystals were washed with water and dried to give the title compound (6.1 g, yield 63%).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06962933B1
Source datasetuspto-grants-2005_11
ORD IDord-39c6e7e35fd646cc9aeb751855e24757
Source noteuspto-grants-2005_11