4-Azidoquinoline 1-oxides with methyl, cyano and carbamoyl groups at the 2 position, and chloro and trifluoromethyl groups at the 7 position were prepared. 4-Azidocinnoline 1-oxide and 2-oxide were also prepared. Their antitumor and mutagenic activities were tested in comparison with those of a carcinogenic, carcinostatic and mutagenic compound, 4-nitroquinoline 1-oxide.
On the photochemistry of 4-azidoquinoline 1-oxide: Structural elucidation of primary photoproduct
作者:Larry Sallans、James S. Poole
DOI:10.1016/j.molstruc.2011.07.006
日期:2011.9
Abstract The primary product of the photolysis of 4-azidoquinoline 1-oxide ( 1 ) is believed to be the azo-dimer ( 4 ), consistent with the photochemistry of the pyridine analogue ( 2 ). This species has not been unambiguously identified, and previous workers have only isolated various isomers of the azoxy species ( 5 ). A combined IR, NMR, LC/MS and computational study confirms the structure 4 as
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。
Kinetic and mechanistic studies of the Staudinger reduction: On the chemistry of aryl phosphazides
作者:Samantha Y. Corrigan、James S. Poole
DOI:10.1002/poc.4442
日期:2023.2
The Staudingerreduction of heteroaryl azides containing an N-oxide moiety with triphenylphosphine in mixed aqueous/THF solutions yields a mixture of amine and iminophosphorane products. A product analysis study using a combination of 1H and 31P NMR spectroscopic techniques indicates that in these systems, even under mild conditions, the amine product is generated, not from the hydrolysis of the iminophosphorane
在混合水溶液/THF 溶液中,用三苯基膦对含有N-氧化物部分的杂芳基叠氮化物进行施陶丁格还原,得到胺和亚氨基正膦产物的混合物。结合使用1 H 和31 P NMR 光谱技术进行的产物分析研究表明,在这些系统中,即使在温和条件下,胺产物的产生也不是标准反应机制所预期的亚氨基正膦的水解,而是通过磷酰肼中间体的水解。生成的胺的量取决于起始叠氮化物的结构、溶剂的组成和反应条件。讨论了酸性、中性和碱性条件下胺形成的可能机制。