Unexpected Synthesis of Oligomeric (Dimethylsilyl)-Bridged Ferrocenes from the Desilylative Coupling of Tertiary 1,10-Bis(dimethylsilyl)ferrocene

摘要

The solvent-free, Pt-catalyzed desilylative coupling reaction of 1,10-bis(dimethylsilyl)ferrocene (12) at elevated temperature leads to the elimination of one dimethylsilane unit and the concomitant oligomerization of ferrocenes with a single dimethylsilyl bridge in low to moderate yields. Airand moisture-stable oils of the dimer (13) and trimer (14) species possessing dimethylsilyl bridges and terminal dimethylsilane end groups have been isolated by preparative TLC and characterized by HR-MS, elemental analysis, and NMR spectroscopy.