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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1727349Generated: November 2, 2026

Hydrochloric Acid → 4-PHENYL-1-PIPERAZINECARBOTHIOAMIDE

https://huagongshe.com/reaction/1727349

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 for 2 hours at 80° C. The reaction mixture was made basic with an 8N-aqueous sodium hydroxide solution, and the crystal was collected by filtration. The crystal was washed with water, and dried to obtain a title compound (6.1 g, yield 63%).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07495018B2
Source datasetuspto-grants-2009_02
ORD IDord-6737a75bd98743d19c6000d9c30aa9e9
Source noteuspto-grants-2009_02