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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 343932Generated: October 30, 2026

Hydrochloric Acid → HCID 70077434, compound

https://huagongshe.com/reaction/343932

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
ReactantPotassium CyanideHCID 9032—
ReactantAmmonium CarbonateHCID 517111—
ReactantWater ethanolHCID 19096565—
ReactantHCID 53923823HCID 53923823—
ProductHCID 70077434HCID 70077434—

Reaction Conditions

Temperature85 °C

Reaction Steps

A mixture of 2-benzylthio-4-cyanobenzaldehyde (1.38 g, 5 mmol), potassium cyanide (0.78 g, 12 mmol) and ammonium carbonate (2.304 g, 24 mmol) in ethanol-water (1:1, 16 ml) was heated with stirring in a sealed reaction vessel at 85° C. for 16 hours. The resulting cooled solution was acidified with 2N hydrochloric acid (6 ml), then extracted with ethyl acetate (3×10 ml), dried and evaporated to a pale brown solid. Chromatography on flash silica eluting with ether/hexane 4:1 gave 5-(2-benzylthio-4-cyanophenyl)hydantoin as a pale orange solid.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS05863947
Source datasetuspto-grants-1999_01
ORD IDord-9acbead8196d4495a3f26636fafbf82e
Source noteuspto-grants-1999_01