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Updated: Jun 23, 2026

Synthesis of Hypervalent Iodonium Alkynyl Triflates for the Application of Generating Cyanocarbenes
Published on: September 8, 2013
Hybrid calix[4]arenes via ionic hydrogenation and transition-metal-mediated processes
Sean P Bew1, Rebecca A Brimage, Glyn Hiatt-Gipson
1School of Chemistry, University of East Anglia, Norwich NR4 7TJ, UK. s.bew@uea.ac.uk
Abstract:
We report the first application of ionic hydrogenation for the synthesis of upper-rim urea- or carbamate-derived hybrid calix[4]arenes. Subsequent metal-mediated transformations using 4-iodophenylurea calixarenes afforded structurally unique 1,3-di(biaryl)-, 1,3-di(biarylalkyne)-, or 1,3-(biaryl)(biarylalkyne)-derived hybrid calixarenes.
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