Synthesis, NMR, IR spectroscopic and X-ray study of novel [pyridazin-3(2H)-one-6-yl]ferrocenes and related ferrocenophane derivatives. Study on ferrocenes. Part 14

Starting from 1,1′-diacetyl-ferrocene a series of novel ferrocenophanes incorporating two connected pyridazinone units were prepared by PTC dialkylation and RCM protocol using second generation Grubbs' catalyst. An interesting π-stacking was detected by the X-ray analysis of a bis-[2-allylpyridazin-3(2H)-one-6-yl]ferrocenyl-azine derivative.