Secondary deuterium isotope effects on the solvolysis of exo-8- and endo-8-tetracyclo[4,3,0,02,4,03,7]nonyl (“deltacyclyl”) brosylates
Abstract
Secondary β-deuterium isotope effects measured for acetolysis of exo-9-deuterio-exo-8-deltacyclyl brosylate (VI) and exo-9-deuterio-endo-8-deltacyclyl brosylate (VIII) support the direct generation of a delocalized intermediate (III) from exo-brosylate (I-OBs) and a localized ion (IV) from endo-brosylate (II-OBs).
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