Meso-alkylidenyl-thia(p-benzi)porphyrins and their unusual protonation selectivity
作者:Seung-Doo Jeong、Kee Jong Park、Hyun-Jin Kim、Chang-Hee Lee
DOI:10.1039/b911695h
日期:——
Meso-alkylidenyl-thia(p-benzi)porphyrin and its ring expanded analog containingexocyclic C-C double bonds at meso-positions, undergo initial protonation at the exocyclic alkylidene alpha-carbon.
Construction of Novel Cyclic Tetrads by Axial Coordination of Thiaporphyrins to Tin(IV) Porphyrin
作者:A. Alka、Yogita Pareek、Vijayendra S. Shetti、M. Rajeswara Rao、Gregory G. Theophall、Way-Zen Lee、K. V. Lakshmi、M. Ravikanth
DOI:10.1021/acs.inorgchem.7b01966
日期:2017.11.20
revealed that the two cis-dihydroxy-N2S2 porphyrins were coordinated at the axial positions of twotin(IV) porphyrins, leading to the symmetric cyclic tetrad structure. The optical properties of tetrads were studied, and these compounds were stable under redox conditions. Preliminary photophysical studies carried out on the tetrads indicated efficient energy transfer from tin(IV) porphyrin to the thiaporphyrin
我们报告了新的环状卟啉四联体1和2的形成,它们是由二羟基锡(IV)卟啉与顺式反应制得的-二羟基-21-硫杂卟啉/ 21,23-二硫杂卟啉。卟啉锡(IV)的独特亲氧性是形成这些四线体的驱动力。此外,这些新颖的四联体代表了仅基于“ Sn-O”相互作用而没有任何其他互补性,非竞争性相互作用模式的含锡(IV)环状卟啉的第一个实例。通过基质辅助激光解吸电离飞行时间质谱,NMR光谱,量子力学计算以及在一种情况下的单晶X射线晶体学研究了环状四分子的分子结构。X射线结构表明,两个顺式-二羟基-N 2 S 2卟啉在两个锡(IV)卟啉的轴向位置配位,形成对称的环状四联结构。研究了四极杆的光学性质,并且这些化合物在氧化还原条件下是稳定的。在四分体上进行的初步光物理研究表明,从卟啉锡(IV)到硫卟啉单元的能量有效转移,这突出了它们在未来能量和电子转移中的潜在应用。
Targeted synthesis of <i>meso</i>-aryl substituted aromatic <i>trans</i>-doubly <i>N</i>-confused dithia/diselena [18] porphyrins (1.1.1.1) with NIR absorption: spectroscopic and theoretical characterization
High yield synthesis and spectroscopic isolation of two hitherto unknown highly stable single conformers of meso-aryl substituted dithia/diselena trans-doubly N-confused porphyrins with fully π-conjugated [18] annulene structures are reported. In-depth solution state spectroscopic measurements and DFT level theoretical calculations strongly show the distinct aromaticity with strong NIR absorption of
Water-Soluble, Core-Modified Porphyrins as Novel, Longer-Wavelength-Absorbing Sensitizers for Photodynamic Therapy. II. Effects of Core Heteroatoms and <i>Meso</i>-Substituents on Biological Activity
作者:David G. Hilmey、Masako Abe、Marina I. Nelen、Corey E. Stilts、Gary A. Baker、Sheila N. Baker、Frank V. Bright、Sherry R. Davies、Sandra O. Gollnick、Allan R. Oseroff、Scott L. Gibson、Russell Hilf、Michael R. Detty
DOI:10.1021/jm0103662
日期:2002.1.1
photodynamic therapy (PDT). The addition of an aromaticaldehyde to 2,5-dilithiothiophene or -selenophene gave diol 3 as a nearly equimolar mixture of meso and d,l diastereomers, which gave a single diastereomer following careful recrystallization. The condensation of pyrrole with a diol 3 using catalytic BF(3)-etherate gave bispyrrolochalcogenophenes (4). Condensation of a diol 3 with 4 in the presence