Abstract
Going around in circles: The copper(I)-mediated annulation of a doubly 1,3-butadiyne-bridged carbazole dimer with amines or Na2S provides isophlorins containing carbazole or thiophene-carbazole moieties, respectively (see scheme). Oxidization of the thiophene-containing isophlorin with MnO 2 gives the corresponding porphyrin, which displays distinct aromaticity and remarkably intensified and red-shifted absorption bands in the near IR region.
Original language | English |
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Pages (from-to) | 5691-5694 |
Number of pages | 4 |
Journal | Angewandte Chemie - International Edition |
Volume | 50 |
Issue number | 25 |
DOIs | |
State | Published - 14 Jun 2011 |
Keywords
- annulation
- aromaticity
- carbazoles
- porphyrinoids