Oxidative cross-coupling of allenyl ketones and organoboronic acids: expeditious synthesis of highly substituted furans.

Abstract

Allenyl ketones are employed as coupling partners in palladium-catalyzed oxidative cross-coupling reactions with organoboronic acids. This reaction constitutes an efficient methodology for the synthesis of highly substituted furan derivatives. Palladium-carbene migratory insertion is proposed as the key step in this transformation. 
DOI: 10.1002/anie.201400500

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