Synthesis and Reactions of Titanacycles Containing Group 14 Elements and Their Zirconium Analogues

Article abstract of DOI:10.1246/bcsj.69.1613

Lithium dimesitylgermanedithiolate reacted with titanocene or zirconocene dichloride to give 2,2-dimesityl-1,3-dithia-2-germa-4-titanacycle (3a) and its zirconocene analogue (3b), which afforded a stable 2,3,4,5-tetrathiagermolane (4) in treatment with S₂Cl₂. The reaction of 3b with Ph₂GeCl₂ gave unsymmetric 1,3,2,4-dithiadigermetane (5). The bis(η⁵-cyclopentadienyl) derivative of cis-2,3-di-t-butyl-2,3-diphenyl-1,4-dithia-2,3-disila-5-titanacyclopentane (7a) obtained from lithium 1,2-di-t-butyl-1,2-diphenyldisilane-1,2-dithiolate reacted with electrophilic reagents (SCl₂, S₂Cl₂, Se₂Cl₂, R₂GeCl₂) to give the corresponding heterocycles.