10.1134/S1070363209050144
The study focuses on the synthesis and properties of substituted benzaldehyde phenylhydrazones, which contain hydroxy, alkoxy, and acyloxy groups. These phenylhydrazones were synthesized from aromatic aldehydes of the vanillin series by reacting them with phenylhydrazine. The purpose of these compounds is their potential use in the preparation of nanofilms and nanomaterials, as well as their high light sensitivity, which could be utilized for thermal vacuum spraying of nanofilms for the formation of submicron structures using laser ablation lithography methods. The chemicals used in the study include substituted aromatic aldehydes (vanillin series), phenylhydrazine, and various esters and derivatives of vanillin, which serve as reactants in the synthesis process. The study also involved the use of anhydrous diethyl ether as a solvent and argon atmosphere for the reaction conditions.
10.1016/S0040-4039(01)88245-9
The study investigates the structure of "benzaldehyde phenylhydrazone oxide," a crystalline compound formed when perbenzoic acid reacts with benzaldehyde phenylhydrazone. Previous researchers had proposed various structures for similar compounds, with Lythgoe's formulation gaining acceptance. However, the authors' analysis of the NMR spectra of these compounds suggests a different structure, proposing that the "hydrazone oxides" should be formulated as 8. They provide evidence supporting this new structure, including the conversion of Lythgoe's compound 4 to 8c by base, the stoichiometry of the oxidation reaction involving perbenzoic acid, and the formation of compound 8a from the oxidation of benzaldehyde phenylhydrazone with other oxidizing agents. Additionally, they study compound 8 in detail, noting its NMR spectrum indicates the presence of two forms, dl and meso, which can interconvert via an allylic nitroxide radical, with an activation enthalpy of approximately 14 kcal per mole.
