作者:Raphael Reuter、Nik Hostettler、Markus Neuburger、Hermann A. Wegner
DOI:10.1002/ejoc.200900861
日期:2009.11
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 obtained. Irradiation under various conditions
Azobenzenophanes 是迷人的大环化合物,由于其独特的光致变色行为而受到特别关注。制备环三偶氮苯 2 (R = H, Br, tBu) 以探测偶氮苯动机的光异构化可以承受多大的应变。从邻苯二胺 (6) 合成大环化合物的总产率为 10-20%。获得了环三偶氮苯 2a 和 2b 的固态结构。在各种条件下辐照不会引起任何异构化。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2009)