Abstract

Abstract The carbon-14 kinetic isotope effect (KIE) was determined for the reduction of benzophenone-carbonyl-14C with lithium isopropoxide in THF at 25 °C. The observed KIE (12k⁄14k=1.045) suggested that there is considerable bonding change at the carbonyl carbon in the transition state. This is the first example of carbon KIE in a reaction which proceeds via initial electron transfer followed by a slow radical process.

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