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Volume 362, Issue 2 pp. 365-369
Communication

Interrupted Carbonyl-Alkyne Metathesis

Austin T. McFarlin

Austin T. McFarlin

Willard Henry Dow Laboratory, Department of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan, 48109 United States

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Rebecca B. Watson

Rebecca B. Watson

Willard Henry Dow Laboratory, Department of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan, 48109 United States

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Troy E. Zehnder

Troy E. Zehnder

Willard Henry Dow Laboratory, Department of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan, 48109 United States

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Corinna S. Schindler

Corresponding Author

Corinna S. Schindler

Willard Henry Dow Laboratory, Department of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan, 48109 United States

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First published: 05 December 2019
Citations: 16

Dedicated to Professor Eric N. Jacobsen on the occasion of his 60th birthday.

Abstract

Carbonyl-olefin metathesis and carbonyl-alkyne metathesis represent established reactivity modes between carbonyls, alkenes, and alkynes under Lewis and Brønsted acid catalysis. Recently, an interrupted carbonyl-olefin metathesis reaction has been reported that results in tetrahydrofluorenes via a distinct fragmentation of the reactive intermediate. We herein report the development of an analogous transformation interrupting the carbonyl-alkyne metathesis reaction path resulting in dihydrofluorene products relying on Lewis acidic superelectrophiles as active catalytic species.