The reaction of iron dodecacarbonyl with 2, 4, 6-trimethyl-1, 4-cyclohexadiene gives a mixture of isomeric iron tricarbonyl 5-endo-H- and 5-exo-H-1, 3,5-trimethyl-1,3-cyclohexadienes.
The treatment of this mixture with trityl fluoborate gave 2,4, 6-trimethylcyclohexadienyliron tricarbonyl tetrafluoborate.
The reaction of 1,5,5-trimethyl-3-methylene-1-cyclohexene with iron dodecacarbonyl gives iron tricarbonyl 1,3,5,5-tetramethyl-1, 3-cyclohexadiene, which practically does not react with trityl fluoborate.
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Piottukh-Peletskii, V.N., Berezina, R.N., Rezbukhin, A.I. et al. Preparation of iron tricarbonyl complexes of methylbenzenonium ions by hydride cleavage reaction. Russ Chem Bull 22, 2027–2030 (1973). https://doi.org/10.1007/BF00929397
- Cleavage Reaction