Efficient access to β-vinylporphyrin derivatives via palladium cross coupling of β-bromoporphyrins with N-tosylhydrazones

• Vinicius R. Campos,
• Ana T. P. C. Gomes,
• Anna C. Cunha,
• Maria da Graça P. M. S. Neves,
• Vitor F. Ferreira and
• José A. S. Cavaleiro

Beilstein J. Org. Chem. 2017, 13, 195–202, doi:10.3762/bjoc.13.22

• the reactivity of the used N-tosylhydrazones 2a–c were observed. The major compounds isolated in these conditions were the starting porphyrin 1 and the zinc(II) complex of TPP (ZnTPP) resulting from the debromination of porphyrin 1. The reductive removal of the halo moiety has been already described

Synthesis and characterization of fluorinated azadipyrromethene complexes as acceptors for organic photovoltaics

• Forrest S. Etheridge,
• Roshan J. Fernando,
• Sandra Pejić,
• Matthias Zeller and
• Geneviève Sauvé

Beilstein J. Org. Chem. 2016, 12, 1925–1938, doi:10.3762/bjoc.12.182

• absorber; non-fullerene acceptor; zinc(II) complex; Introduction Azadipyrromethenes (ADPs) (Figure 1a) are a class of monoanionic bidentate ligands with strong absorption in the visible and near IR range. Their absorbance and emission properties can be readily tuned through structural modifications and

A perfluorocyclopentene based diarylethene bearing two terpyridine moieties – synthesis, photochemical properties and influence of transition metal ions

• Falk Wehmeier and
• Jochen Mattay

Beilstein J. Org. Chem. 2010, 6, No. 53, doi:10.3762/bjoc.6.53

• ). This observation may be due to side processes involving charge transfer transitions at the transition metal centres. The corresponding zinc(II) complex [Zn2+@10a] was synthesized from zinc(II) trifluoromethansulfonate and 10a in methanol. The UV–vis-spectra are shown in Figure 5. In this case neither