71435-57-9Relevant academic research and scientific papers
Porphyrin-boron diketonate dyads
Costa, Letícia D.,Guieu, Samuel,Rocha, Jo?o,Silva, Artur M. S.,Tomé, Augusto C.
, p. 2186 - 2192 (2017/03/10)
Porphyrins and boron diketonates represent two well studied classes of compounds, and whose photophysical properties make them suitable for application in bioimaging, as photosensitizer agents, or as pH or ion sensors. Compounds that combine the optical properties of these two chromophores in a single molecule are not known. Herein, we report the synthesis and characterization of two porphyrin-boron diketonate dyads and their zinc complexes. Overall, the absorption and emission spectra of these dyads are dominated by the porphyrin core. The nature of the diketonate or the boron diketonate has little effect on the absorption and fluorescence profiles of the dyads, inducing small bathochromic shifts and a slight increase in the fluorescence quantum yield.
β-Pyrazino-fused tetrarylporphyrins
Mandoj, Federica,Nardis, Sara,Pudi, Rajesh,Lvova, Larisa,Fronczek, Frank R.,Smith, Kevin M.,Prodi, Luca,Genovese, Damiano,Paolesse, Roberto
, p. 136 - 143 (2013/10/21)
A novel method for the preparation of β-fused porphyrin dyads was developed that exploits a one-pot reaction of 2,3-diaminoporphyrins with diethyl oxalate. This approach provides good yields of the zinc β-fused dyad and the corresponding free-base, openin
Direct β-amination reaction in porphyrin systems - A simple route to compounds containing two nitrogen substituents at both β-positions of the same pyrrole unit
Ostrowski, Stanis?aw,Grzyb, Sebastian
, p. 6355 - 6357 (2013/01/15)
The direct β-amination of porphyrin derivatives is described. 2-Nitro-meso-tetraarylporphyrins (zinc and copper complexes) react with N,N,N-trimethylhydrazinium iodide (TMHI) in the presence of a base (KOH/DMSO system, ca 70-80 °C) to give products of nucleophilic aromatic substitution of hydrogen. In this process, the nucleophilic replacement of a H-atom by an NH2 group takes place. The products obtained, bearing two neighbouring nitrogen substituents on the same pyrrole ring, are valuable intermediates for various synthetic uses.
Selective double functionalization of meso-tetraphenylporphyrin complexes on the same pyrrole unit by tandem electrophilic/nucleophilic aromatic substitution
Ostrowski, Stanislaw,Raczko, Anna M.
, p. 974 - 978 (2007/10/03)
The mono-nitrated meso-tetraphenylporphyrin (TPP) complex 2 could be readily functionalized on the substituted pyrrole ring with yields of up to 83%. These transformations were achieved via aromatic substitution with carbanions generated from diverse func
Synthesis, electronic characterisation and significant second-order non-linear optical responses of meso-tetraphenylporphyrins and their Zn II complexes carrying a push or pull group in the β pyrrolic position
Annoni, Elisabetta,Pizzotti, Maddalena,Ugo, Renato,Quici, Silvio,Morotti, Tamara,Bruschi, Maurizio,Mussini, Patrizia
, p. 3857 - 3874 (2007/10/03)
This work describes the synthesis and characterisation by electronic absorption spectroscopy, cyclic voltammetry and by a solvatochromic investigation of meso-tetraphenylporphyrins and their ZnII complexes substituted at the β pyrrolic position
Control of Reactivity at the Porphyrin Periphery by Metal Ion Co-ordination: a General Method for Specific Nitration at the β-Pyrrolic Position of 5,10,15,20-Tetraarylporphyrins
Catalano, Maria M.,Crossley, Maxwell J.,Harding, Margaret M.,King, Lionel G.
, p. 1535 - 1536 (2007/10/02)
The site of nitration by nitrogen dioxide on a range of metalloporphyrins has been found to be dependent on the co-ordinated metal; copper(II), nickel(II), and palladium(II) complexes are nitrated specifically on the porphyrin β-pyrrolic position while magnesium(II), zinc(II), chloroiron(III), and cobalt(II) complexes also give products which result from reaction at the meso-position.
