Base-Promoted Decarboxylative Azo-Coupling: Construction of Unsymmetrical Azocarboranes

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• 作者：Huan-huan Li ; Fan Bai ; Hong YanChang-sheng Lu
• 刊名：Organic Letters
• 出版年：2017
• 出版时间：February 17, 2017
• 年：2017
• 卷：19
• 期：4
• 页码：862-865
• 全文大小：437K
• ISSN：1523-7052

文摘

Base-promoted decarboxylative azo couplings of carboranyl carboxylic acids with diazo salts have been developed to provide trans-azocarboranes in high yields (up to 94%). This approach is simple, efficient, and compatible with various functional groups. Mechanistically, the coupling has been proven to proceed in a nonradical pathway, which is distinct from those classical decarboxylative couplings.