Journal of Organometallic Chemistry p. 265 - 270 (1980)
Update date:2022-08-28
Topics:
Nalesnik, Theodore E.
Orchin, Milton
9-Methylidenefluorene (IIa) reacts rapidly with HCo(CO)4 at -67 deg C to give a quantitative yield of 9-methylfluorene (IIIa); k2=(13.4 +/- 0.5)*10-2 l mol-1 s-1.Although the internal olefin, 9-ethylidenefluorene (IIb) reacts more slowly than IIa, it is hydrogenated about 2.5 times as fast as the terminal olefin, 1,1-diphenylethylene (I).Measurement of the rate of the reaction of IIb with DCo(CO)4 and comparison with HCo(CO)4 shows a very large inverse isotope effect kH/kD of 0.43.
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