Although iron-promoted diazo transformations were only discovered during the 1990s,iron can undergo facile changes in its oxidation state and possesses distinct Lewis acid character,and these properties have aforded iron a privileged position as a catalyst in the transformations of diazo compounds.In this review,we have provided an overview of the iron-catalyzed diazo transformation reactions reported in the literature by the end of 2013 with the aim of stimulating further interest in this area of research.
Although iron-promoted diazo transformations were only discovered during the 1990s, iron can undergo facile changes in its oxidation state and possesses distinct Lewis acid character, and these properties have afforded iron a privileged position as a catalyst in the transformations of diazo compounds. In this review, we have provided an overview of the iron-catalyzed diazo transformation reactions reported in the literature by the end of 2013 with the aim of stimulating further interest in this area of research.