Regioselective Synthesis of Unsymmetric Tetra- and Pentasubstituted Pyrenes with a Strategy for Primary <i>C</i>-Alkylation at the 2-Position
作者:Ana M. Dmytrejchuk、Sydney N. Jackson、Rolande Meudom、John D. Gorden、Bradley L. Merner
DOI:10.1021/acs.joc.8b01491
日期:2018.9.7
The synthesis of 1,2,4,5- and 1,2,9,10-tetrasubstituted and 1,2,4,5,8-pentasubsutituted pyrenes has been achieved by initially functionalizing the K-region of pyrene. Bromination, acylation, and formylation reactions afford high to moderate levels of regioselectivity, which facilitate the controlled introduction of other functional groups about 4,5-dimethoxypyrene. Access to 4,5-dimethoxypyren-1-ol
Synthesis of Oligo(1,8‐pyrenylene)s: A Series of Functional Molecular Liquids
作者:Joshua C. Walsh、David T. Hogan、Kerry‐Lynn M. Williams、Simon D. Brake、Gandikota Venkataramana、Tara A. Misener、Brandon J. Wallace、Richard P. Johnson、David W. Thompson、Yuming Zhao、Brian D. Wagner、Graham J. Bodwell
DOI:10.1002/cplu.201900133
日期:2019.6
A monomer-through-pentamer series of oligo(1,8-pyrenylene)s was synthesized using a two-step iterative synthetic strategy. The trimer, tetramer, and pentamer are mixtures of atropisomers that interconvert slowly at room temperature (as shown by variable-temperature NMR analysis). They are liquids well below room temperature, as indicated by POM, DSC and SWAXS analysis. These oligomers are highly fluorescent
作者:Gandikota Venkataramana、Prateek Dongare、Louise N. Dawe、David W. Thompson、Yuming Zhao、Graham J. Bodwell
DOI:10.1021/ol200485x
日期:2011.5.6
A concise, highly regioselective synthesis of 1,8-dibromo-4,5-dialkoxypyrenes has been developed and exploited in the synthesis of some 1,8-pyrenylene- ethynylene macrocycles. The H-1 NMR data and NICS calculations indicate that there is little or no macrocyclic ring current. Concentration-dependent UV-visible studies indicate no aggregation at low concentration, but 8b forms dimers with voids suitable for intercalation of small molecules in the solid state.