From thioether substituted porphyrins to sulfur linked porphyrin dimers: an unusual S<sub>N</sub>Ar via thiolate displacement?
作者:Aoife A. Ryan、Shane Plunkett、Aoife Casey、Thomas McCabe、Mathias O. Senge
DOI:10.1039/c3cc46828c
日期:——
Treatment of meso 2-ethylhexyl-3-mercaptopropionate substitutedporphyrins with base at room temperature generated a porphyrin thiolate anion which in situ reacted in a nucleophilic aromatic substitution (SNAr) reaction with remaining thioether derivative. This reaction yielded S-linked bisporphyrins in good yields, with mechanistic insight obtained via displacement reactions. Additionally, SNAr of
Comparative Synthetic Strategies for the Generation of 5,10- and 5,15-Substituted <i>Push-Pull</i>
Porphyrins
作者:Alina Meindl、Shane Plunkett、Aoife A. Ryan、Keith J. Flanagan、Susan Callaghan、Mathias O. Senge
DOI:10.1002/ejoc.201700093
日期:2017.7.7
unsymmetrically substituted porphyrins. Due to their widespread applications and rise in demand we undertook a comparative analysis of synthetic strategies for meso-substituted porphyrins and present the synthesis of five different series of so-called A2BC push-pullporphyrins. The synthetic pathways used were applied to both 5,15-substituted and 5,10-substituted porphyrins, showcasing their flexibility
Synthesis of Diazepine-fused Porphyrinoids and Annulated Porphyrin Arrays
作者:Aoife A. Ryan、Fanny Pouyatos、Aurelie Stallivieri、Teodor Silviu Balaban、Mathias O. Senge
DOI:10.5560/znb.2014-4100
日期:2014.8.1
Porphyrins with exocyclicrings allow for significant modulation of the photochemical properties of the macrocycle via modulation of the aromatic system through electronic and conformational effects. Here we sought to generate such porphyrinoids via a stepwise strategy involving two cycloaddition steps, the first improving the synthesis of a relatively unstable dehydropurpurin intermediate which ring opens to