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Dual Amine‐ and Brønsted Acid‐Catalyzed α‐Allylic Alkylation of Aldehydes
Authors:Li‐Wen Xu  Guang Gao  Feng‐Lei Gu  Hao Sheng  Li Li  Guo‐Qiao Lai  Jian‐Xiong Jiang
Abstract:A very simple method was developed for the direct, palladium‐free catalytic α‐allylic alkylation of aldehydes. The direct organocatalytic intermolecular α‐allylic alkylation reaction was mediated by a simple combination of Brønsted acid and enamine catalysis which furnished α‐allylic alkylated aldehydes and cyclohexanone in high yields and chemoselectivities. The reaction conditions are mild and environmental friendly, the process is conducted under an atmosphere of air without the need for dried solvents, and water is the only side product of the allylic alkylation reaction.
Keywords:aldehydes  allylic alkylation  Brø  nsted acids  enamine catalysis  organocatalysis
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