Photochemical rearrangement of diarylethenes: synthesis of functionalized phenanthrenes
作者:A. V. Zakharov、A. V. Yadykov、A. G. Lvov、E. A. Mitina、V. Z. Shirinian
DOI:10.1039/d0ob00296h
日期:——
photocyclization of diarylethenes (DAE) under UV irradiation is proposed. The reaction proceeds through 6π-electrocyclization with the formation of a cyclic (closed) intermediate that undergoes a rearrangement affording unsymmetrical phenanthrenes in good yields. However, in contrast to benzene derivatives, the photocyclization of naphthalene diarylethenes proceeds more slowly, which is confirmed by DFT
New fluorescent switches based on photochromic 2,3-diarylcyclopent-2-en-1-ones and 6-ethoxy-3-methyl-1H-phenalen-1-one
作者:Dmitry V. Lonshakov、Valerii Z. Shirinian、Andrey G. Lvov、Boris V. Nabatov、Mikhail M. Krayushkin
DOI:10.1016/j.dyepig.2012.12.019
日期:2013.5
New fluorescent switches with 2,3-diarylcyclopent-2-en-1-ones as the photochromic component and 6-ethoxy-3-methyl-1H-phenalen-1-one as the fluorophore have been prepared. Two approaches to develop the photoswitches have been applied. The first involves covalent binding of the fluorophore to photochromic diarylethene molecule by ether linkage. The second type of fluorescent switch was been prepared