| Abstract
| - Quinone methides (QMs) are highly reactive compounds that play important roles in various chemicaland biological processes. In this work, a stable imino-pyridine platinum(IV) complex that bears a silyl-protected oxy-benzyl precursor of the quinone methide BHT−QM, derived from the food preservative2,6-di-tert-butyl-4-methylphenol (BHT), was prepared and fully characterized, including by X-ray structuralcharacterization. De-silylation results in a rarely observed, fully characterized, zwitterionic intermediateη1-methylene-p-phenoxy-Pt(IV), which undergoes de-aromatization to the unstable BHT−QM, whichwas trapped in solution.
- A stable imino-pyridine Pt(IV) complex, bearing a silyl-protected oxy-benzyl precursor of the quinone methide BHT−QM, derived from the food preservative 2,6-di-tert-butyl-4-methylphenol (BHT), was synthesized. Silyl deprotection led to formation of a directly observed zwitterionic η1-methylene-p-phenoxy intermediate, which underwent de-aromatization followed by release and trapping in solution of BHT−QM and formation of cis-(N,N)PtMe2.
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