Redox-responsive conformational alteration of aromatic amides bearing N-quinonyl system
作者:Iwao Okamoto、Yusuke Takahashi、Mika Sawamura、Mio Matsumura、Hyuma Masu、Kosuke Katagiri、Isao Azumaya、Masanori Nishino、Yukari Kohama、Nobuyoshi Morita、Osamu Tamura、Hiroyuki Kagechika、Aya Tanatani
DOI:10.1016/j.tet.2012.04.114
日期:2012.7
Redox-induced conformational alteration of N-aryl-N-phenylamides, in which the N-aryl group consists of a hydroquinone-p-quinone system, was examined. The reduced form bearing a dihydroxyphenyl or dimethoxyphenyl group exists mainly in the E-form, whereas the oxidized form bearing a N-benzoquinone moiety takes the Z-form both in the crystal and in solution. This redox-induced conformational alteration is associated with a marked change in optical properties. This system appears to have suitable properties for use in external redox stimulus-responsive functional switching. (c) 2012 Elsevier Ltd. All rights reserved.