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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1062668Generated: October 26, 2026

Phenylthiourea → 2-(Phenylamino)-4-(3-cyanophenyl)-5-carboethoxythiazole

https://huagongshe.com/reaction/1062668

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPhenylthioureaHCID 676454—
ReactantEthyl 2-bromo-3-(3-cyanophenyl)-3-oxopropionateHCID 22282470—
SolventEthanolHCID 702—
Product2-(Phenylamino)-4-(3-cyanophenyl)-5-carboethoxythiazoleHCID 2228242849.3%

Reaction Conditions

Temperature80 °C

Reaction Steps

To a solution of ethyl 2-bromo-3-(3-cyanophenyl)-3-oxopropionate (0.60 g, 2.03 mmol) in 20 mL of absolute ethanol was added N-phenylthiourea (0.31 g, 2.03 mmol). The resulting mixture was stirred at 80° C. for 3 h. The reaction was allowed to cool and the solvent was evaporated in vacuo. The residue was taken up in ethyl acetate, washed with saturated aq NaHCO3 and brine, dried (MgSO4) and concentrated in vacuo to yield a solid. Trituration with hexanes/ethyl ether left the title compound as an off-white solid (0.35 g, 49%). MS(NH3—CI) 350 (M+H)+.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06962935B2
Source datasetuspto-grants-2005_11
ORD IDord-c0cf73cbacdc4c3e877036933f96a1a3
Source noteuspto-grants-2005_11