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Updated: Jul 15, 2026

Preparation of a Corannulene-functionalized Hexahelicene by Copper(I)-catalyzed Alkyne-azide Cycloaddition of Nonplanar Polyaromatic Units
Published on: September 18, 2016
Photochemical cycloisomerizations via 7-exo-dig reactions on a calix[4]arene scaffold
Hassan Al-Saraierh1, David O Miller, Paris E Georghiou
1Department of Chemistry, Memorial University of Newfoundland, St. John's, Newfoundland and Labrador, Canada.
Abstract:
Narrow-rim 1,3-bis(phenylethynyl)-p-tert-butylcalix[4]arenes were found to be photolabile, producing unprecedented seven-membered oxacyclic systems formed via 7-exo-dig cyclizations and a new [3.2.1]bicyclic system via subsequent 1,8-H shifts. The calixarene provided a scaffold for these unprecedented photochemical reactions to occur.
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