Synthesis and photodimerisation of tetrabenzo[ab,f,jk,o][18]annulenes
作者:Herbert Meier、Michael Fetten、Christoph Schnorpfeil、Alexander V. Yakimansky、Ingrid G. Voigt-Martin
DOI:10.1016/s0040-4039(99)00876-x
日期:1999.6
The tetrabenzo[ab,f,jk,o][18]annulenes 7a,b, generated in a 5-step synthesis, show photodimerisation and -oligomerisation reactions in the solid state and in solution. The state of aggregation determines the reaction route. Whereas the cyclodimer 8a has a simple cyclobutane structure, the dimer 8b is a highly symmetrical cyclophane.