97374-99-7Relevant academic research and scientific papers
Kinetics and mechanism of cyclopropanation of cyclooctene by [Fe(η5-C5H5)(CO)2CH 2SPh2]BF4
McCarten, Paul,Barefield, E. Kent
, p. 4645 - 4648 (1998)
The kinetics of reaction of [Fe(η5-C5H5)(CO)2CH 2SPh2]BF4 with cyclooctene in CH2Cl2 solution have been studied under pseudo-first-order conditions at room temperature. The variation of kobs is nonlinear in both cyclooctene and added Ph2S. The results are interpreted in terms of a two-step reaction in which the cation [Fe(η5-C5H5)(CO)2CH 2SPh2]+ undergoes reversible, dissociative loss of Ph2S followed by competitive capture of the methyleneiron complex by cyclooctene to produce bicyclo[6.1.0]nonane. The methyleneiron intermediate is 4-5 times more reactive toward diphenylsulfide than cyclooctene. In the absence of added Ph2S, millimolar solutions of the iron complex react with cyclooctene at room temperature with a half-life of about 36 min to give >85% yields of bicyclo[6.1.0]nonane after 3 h, and it is thus more reactive than the dimethyl- and methylphenylsulfonium salt analogues.
Thallium(I)-promoted substitution reactions of chloromethyl complexes of iron and molybdenum with uncharged nucleophiles
Kent Barefield,McCarten, Paul,Hillhouse, M. Christine
, p. 1682 - 1684 (2008/10/08)
TIBF4 has been used as an electrophilic promotor for substitution of chloride in [Fe(η5-C5H5-(CO)2CH 2Cl] and [Mo(η5-C5H5)(CO)3CH 2Cl] by a wide range of uncharged nucleophiles. The resulting fluoroborate onium salts are obtained in high yield.
