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Secondary Hydrogen Isotope Effects. VII. Ethanolysis Rates of 1,1-Dimethylallyl-3,3-d2 Chloride and 3,3-Dimethylallyl-1,1-d2 Chloride

V. Belanić-Lipovac ; Institute »Ruder Boskovic«, Zagreb, Croatia, Yugoslavia
S. Borčić ; Institute »Ruder Boskovic«, Zagreb, Croatia, Yugoslavia
D. E. Sunko ; Institute »Ruder Boskovic«, Zagreb, Croatia, Yugoslavia


Puni tekst: engleski pdf 6.116 Kb

str. 61-65

preuzimanja: 67

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Sažetak

Primary aind tertiary dimethylallyl chlorides deuterated at
either the alpha or gamma pos~tion were prepared a:nd subjected
to e.thanolysis. A kinetic isotope effect (kt1/kn) of 1.20 was observed
in the reaction of the primary isomer while rthe tertiary chloride
reacted at the same rate as the undeuterated analog,. The absence
of an isotope effect in the latter case is explained by the lack
of sp3 - sp2 rehybridization of the carbon-deuterium bonds in the
rate determining step.

Ključne riječi

Hrčak ID:

208216

URI

https://hrcak.srce.hr/208216

Posjeta: 159 *