The Synthesis And The Migraction Reaaction Ofβ-Ferrocenecarboxyl-α-Diazocarbonyl Compounds

1,2-Migration reaction is one of the most common reactions of the organic intermediates such as carbocation, free radical, carbanion, free carbene and metal carbene. Although the1,2-migration reactions via the former four intermediates have been comprehensively studied, the studies on1,2-migration reactions via metal carbene are still under way. Transition-metal-catalyzed decomposition of diazo compounds is an important method to form metal carbene. According to previous studies, the results showed that1.2-hydride migration is predominant in most cases, but1.2-acetoxy migration can override1.2-hydride migration for (3-acetoxy-a-diazo carboxyl compounds. We have studied the effects of catalyst, ligand. temperature and solvent on the migrate selectivity of a series of β-ferrocenecarboxyl-a-diazocarbonyl respectively, acyloxy migration still has a priority to1.2-hydride migration, although ferrocenecarboxyl have a huge steric effect.At the same time, we also described some exploratory investigations on olefination reaction of carbonylferrocene compounds, transition-metal-catalyzed C-H bond activation and C-C bond coupling reactions.