Ambient Intermolecular [2 + 2] Cycloaddition: An Example of Carbophilicity and Oxophilicity Competition in Au/Ag Catalysis

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• 作者：Yijin Su ; Yanwei Zhang ; Novruz G. Akhmedov ; Jeffrey L. Petersen ; Xiaodong Shi
• 刊名：Organic Letters
• 出版年：2014
• 出版时间：May 2, 2014
• 年：2014
• 卷：16
• 期：9
• 页码：2478-2481
• 全文大小：303K
• 年卷期：v.16,no.9(May 2, 2014)
• ISSN：1523-7052

文摘

The gold-catalyzed intermolecular [2 + 2] cycloaddition of propargyl esters was achieved with good stereoselectivity. The 鈥渟ilver-free鈥?condition was critical for this transformation, while only a trace amount of [2 + 2] products were formed in the presence of silver under otherwise identical conditions.