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Urea-Catalyzed N–H Insertion–Arylation Reactions of Nitrodiazoesters

✍ Scribed by So, Sonia S.; Oottikkal, Shameema; Badjić, Jovica D.; Hadad, Christopher M.; Mattson, Anita E.

Book ID
124056823
Publisher
American Chemical Society
Year
2014
Tongue
English
Weight
754 KB
Volume
79
Category
Article
ISSN
0022-3263

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✍ Galina A Artamkina; Alexey G Sergeev; Irina P Beletskaya 📂 Article 📅 2001 🏛 Elsevier Science 🌐 French ⚖ 158 KB

A new method for the palladium-catalyzed arylation of ureas is described. The coupling reaction of urea and phenylurea with aryl halides containing electron-withdrawing groups in the p-position in dioxane in the presence of 0.5-1.0 mol% of Pd 2 dba 3 •CHCl 3 , Xantphos and Cs 2 CO 3 as a base gives