Großflächige Makrocyclen aus p‐Quaterphenyl‐Bauteilen

Abstract
Flat Macrocycles Based on p‐Quaterphenyl Units[1.1](3,3′″)‐p‐Quaterphenylophanes 1 – 3 are synthesized via 6 – 12 starting with biphenyl derivative 5. The properties of 1 – 3 (UV, NMR) and their charge‐transfer complexation are compared to p‐quaterphenyl. 1 – 3 are high‐melting, colorless solids, which are sparingly soluble in common organic solvents. They contain two “isolated” p‐quaterphenyl units. Similar to p‐quaterphenyl, 2, 2a and 3 form greenish‐blue chargetransfer complexes with tetracyanoethene (TCNE) in CH2Cl2.