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Synthesis of Substituted Imidazolidines: Base-Stable Precursors of 4,5-Dihydro-1 H -imidazol-3-ium Salts and N -Heterocyclic Carbenes

✍ Scribed by Egert, Meike; Walther, Sebastian; Plenio, Herbert

Book ID: 123619268
Publisher: John Wiley and Sons
Year: 2014
Tongue: English
Weight: 281 KB
Volume: 2014
Category: Article
ISSN: 1434-193X
DOI: 10.1002/ejoc.201402364

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## Abstract __N__‐[(5‐Cyano‐2‐oxoimidazolidin‐4‐yl)‐iminomethyl]‐__p__‐toluensulfonamide **3** was prepared in fairly good yield by the base catalyzed cyclisation of __N__‐[(Z)‐2‐amino‐1,2‐dicycanovinylcarbamoyl]‐__p__‐toluenesulfon‐amide **2**. The __N__‐[(Z)‐2‐amino‐1,2‐dicycanovinyl carbamoyl]‐_