Synthesis and property studies of cyclotrisazobenzenes

R Reuter, N Hostettler, M Neuburger…

Index: Reuter, Raphael; Hostettler, Nik; Neuburger, Markus; Wegner, Hermann A. European Journal of Organic Chemistry, 2009 , # 32 p. 5647 - 5652

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Citation Number: 10

Abstract

Abstract Azobenzenophanes are fascinating macrocycles, which are of special interest due to their unique photochromic behavior. Cyclotrisazobenzenes 2 (R= H, Br, tBu) were prepared to probe how much strain the photoisomerization of the azobenzene motive can tolerate. The macrocycles were synthesized in an overall yield of 10–20% from ortho- phenylenediamine (6). Solid-state structures of cyclotrisazobenzenes 2a and 2b were ...