Unexpected Transformation of Aldehydes into Benzoins with Copper(I)/Samarium
作者:Yongjun Liu、Hui Wang、Yulong Fu、Yan Qi、Kuiwei Yang
DOI:10.1080/00397911.2013.804572
日期:2014.1.17
Abstract The reductivecoupling of aldehydes to afford pinacolic alcohols using all kinds of reducing agents involving samarium is well known. In this report, however, treatment of aromaticaldehydes 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