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Updated: Mar 23, 2026

Accessing Valuable Ligand Supports for Transition Metals: A Modified, Intermediate Scale Preparation of 1,2,3,4,5-Pentamethylcyclopentadiene
Published on: March 20, 2017
Investigating the Reactivity of 1,4-Anthracene-Incorporated Cycloparaphenylene
Penghao Li1, Bryan M Wong2, Lev N Zakharov3
1Department of Chemistry & Biochemistry, University of Oregon , Eugene, Oregon 97403, United States.
Abstract:
Cycloparaphenylenes (CPPs) and their derivatives are unique conjugated macrocycles with novel optoelectronic and host-guest properties. A better understanding of their reactivity is essential for creating new functional materials utilizing these strained aromatic molecules as building blocks. 1,4-Anthracene-incorporated CPP 1 was synthesized and exhibited Diels-Alder reactivity but was unable to photodimerize. Comparison studies with cyclophane 2 and unstrained 3 indicated that the distorted anthracene geometry is likely the major contributor to the anomalous reactivity of 1.
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