Thermal oxidative destruction of complexes of heterocyclic N-oxides with Zn(II)tetra-phenylporphyrin
作者:N. Sh. Lebedeva、W. Zielenkiewicz、E. Utzig、Y. A. Gubarev、V. P. Andreev、Ya. P. Nizhnik
DOI:10.1007/s10973-007-8444-6
日期:2008.2
applied for investigation of molecular complexes of heterocyclicN-oxide with zinc(II)tetraphenylporphyrin. The kinetic characteristics of the process of the thermal oxidative destruction for individual compounds and their molecular complexes have been calculated. The obtained results indicate that the complex formation of ZnTPhP with heteroaromaticN-oxides leads to an increase of the thermal stability
Extra Coordination of Zn-Tetraphenylporphine with Pyridine, Quinoline, and Acridine N-Oxides
作者:V. P. Andreev、Ya. P. Nizhnik、D. G. Bezruchko、A. K. Morozov
DOI:10.1007/s11176-005-0416-6
日期:2005.8
The log K values of zinc tetraphenylporphine (Zn-TPhP) complexes with pyridine, quinoline, and acridine N -oxides and with their nonoxidized analogs, as well as the positions of absorption maxima of the complexes with respect to Zn-TPhP linearly depend on the \(pK_BH^ + }\) of the ligands in water (methanol, acetonitrile, nitromethane, and acetone) and on Hammett σ constants in the absence of steric
四苯基卟啉锌(Zn-TPhP)与吡啶,喹啉和a啶 N- 氧化物及其非氧化类似物的log K 值 以及该复合物相对于Zn-TPhP的最大吸收位置线性取决于水中的配体(甲醇,乙腈,硝基甲烷和丙酮)的\(pK_ BH ^ +} \)和在没有空间位阻效应的情况下的Hammettσ常数。
Scaffold hopping by net photochemical carbon deletion of azaarenes
作者:Jisoo Woo、Alec H. Christian、Samantha A. Burgess、Yuan Jiang、Umar Faruk Mansoor、Mark D. Levin
DOI:10.1126/science.abo4282
日期:2022.4.29
Discovery chemists routinely identify purpose-tailored molecules through an iterative structural optimization approach, but the preparation of each successive candidate in a compound series can rarely be conducted in a manner matching their thought process. This is because many of the necessary chemical transformations required to modify compound cores in a straightforward fashion are not applicable