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Synthesis and photodimerisation of tetrabenzo[ab,f,jk,o][18]annulenes

Authors
Journal
Tetrahedron Letters
0040-4039
Publisher
Elsevier
Publication Date
Volume
40
Issue
26
Identifiers
DOI: 10.1016/s0040-4039(99)00876-x
Keywords
  • Annulenes
  • Aggregation
  • Dimerisation
  • Cyclophanes

Abstract

Abstract 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.

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