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Arylboronic Acid Catalyzed Direct Condensation of Carboxylic Acids with Ureas.

✍ Scribed by Toshikatsu Maki; Kazuaki Ishihara; Hisashi Yamamoto

Publisher
John Wiley and Sons
Year
2004
Weight
18 KB
Volume
35
Category
Article
ISSN
0931-7597

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## Abstract A variety of unsymmetrical alkynes (III) is readily prepared by a highly efficient Pd(O‐Ac)~2~‐catalyzed decarboxylative cross‐coupling of boronic acids (I) with acids (II) in the presence of Ag~2~O as oxidant.