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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 3791Generated: October 25, 2026

Phenyl isocyanate → HCID 178418533, compound

https://huagongshe.com/reaction/3791

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPhenyl isocyanateHCID 7672—
ReactantTriethylamineHCID 8471—
Reactant3-(4-Benzylpiperazin-1-yl)propanethiol dihydrochlorideHCID 13731114—
SolventDichloromethaneHCID 6344—
ProductHCID 178418533HCID 17841853341.9%

Reaction Steps

1.6 g of phenyl isocyanate were added to a solution of 4.0 g of 3-(4-benzylpiperazin-1-yl)propanethiol dihydrochloride and 2.6 g of triethylamine in 50 ml of methylene chloride. The mixture was refluxed for four hours, washed with water and dried (sodium sulfate). Precipitation of the salt with ethereal hydrochloric acid gave 1.2 g (20% of theory) of N-phenyl-S-[3-(4-benzylpiperazin-1-yl)propyl]thiocarbamate dihydrochloride monohydrate as a white crystalline solid, M.p. 216°-219° C.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04722926
Source datasetuspto-grants-1988_02
ORD IDord-e0666140f18d4bf7be07a753ad3f837c
Source noteuspto-grants-1988_02