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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 9168Generated: October 25, 2026

Ethyl isocyanate → N-(6-Cyano-1,3-benzothiazol-2-yl)-N'-ethylurea

https://huagongshe.com/reaction/9168

Reaction equation

Participants

RoleNameHCIDCharge
ReactantEthyl isocyanateHCID 8022—
ReactantTriethylamineHCID 8471—
Reactant2-Aminobenzothiazole-6-carbonitrileHCID 4327139—
SolventDimethylformamideHCID 6228—
ProductN-(6-Cyano-1,3-benzothiazol-2-yl)-N'-ethylureaHCID 21985533—

Reaction Conditions

Temperature80 °C

Reaction Steps

0.2 grams of 2-amino-1,3-benzothiazole-6-carbonitrile is dissolved in about 5 ml dimethylformamide. About 0.2 ml of ethylisocyanate is added followed by about 0.3 ml triethylamine and the solution is heated to about 80° C. under good agitation. The solution is allowed to stir for about 4 hours then cooled to RT. The solvent is removed in vacuo and the solids are washed well with ether. The product is further purified by column chromatography and after drying in vacuo, about 0.14 grams is isolated.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07091227B2
Source datasetuspto-grants-2006_08
ORD IDord-b5781a6f057c43938316f29e4db42aaf
Source noteuspto-grants-2006_08