Synthetic Communications

Unexpected Transformation of Aldehydes into Benzoins with Copper (I)/Samarium

Y Liu, H Wang, Y Fu, Y Qi, K Yang

文献索引：Liu, Yongjun; Wang, Hui; Fu, Yulong; Qi, Yan; Yang, Kuiwei Synthetic Communications, 2014 , vol. 44, # 2 p. 259 - 266

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被引用次数: 0

摘要

The reductive coupling of aldehydes to afford pinacolic alcohols using all kinds of reducing agents involving samarium is well known. In this report, however, treatment of aromatic aldehydes with Cu(I)/Sm system produces benoins and/or benzils in good yields. A possible mechanism is proposed where Cu(I) not only activates the Sm metal but also promotes the dehydrogenation of the intermediates, during which a Cu(III) species may be involved.