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• 42811-75-6 p-bromobenzonitrile N-oxide 
• 25062-46-8 4-bromobenzaldehyde Oxime 
• 75-05-8 acetonitrile 
• 29203-58-5 4-bromo-N-hydroxybenzenecarboximidoyl chloride 
• 106-37-6 1.4-dibromobenzene 
• 35578-47-3 4,4'-dibromobenzil 
• 1122-91-4 4-bromo-benzaldehyde 

Relevant academic research and scientific papers

Oxidation of: O -dioxime by (diacetoxyiodo)benzene: Green and mild access to furoxans

Furoxan has been widely used in the field of high energy density materials because of its excellent properties such as high density, high standard enthalpy of formation and high nitrogen content. However, its existing synthesis methods are still restricted by the problems of difficult substrate preparation and manual handling of hazardous reagents. Herein, we disclosed a mild oxidation strategy to efficiently obtain furoxan derivatives starting from readily available o-dioxime substrates. This reaction features high functional group tolerance and easy scale-up, and has excellent regioselectivity for specific nonsymmetric o-dioximes. This method greatly reduces the safety risk and simplifies the operation process, and means that diversified furoxan derivatives can be easily accessed, thus paving the way for the wide application of furoxan derivatives. This journal is

The rapid generation of isothiocyanates in flow

Isothiocyanates are versatile starting materials for a wide range of chemical reactions. However, their high nucleophilic susceptibility means they are best prepared and used immediately. We report here on a flow platform for the fast and efficient formation of isothiocyanates by the direct conversion of easily prepared chloroximes. To expedite this chemistry a flow insert cartridge containing two immobilised reagents is used to affect the chemical transformation which typically eliminates the requirements for any conventional work-up or purification of the reaction stream.

A study of the reaction mechanism of 3-nitro-4-R-furoxans formation by nitrosation of dipotassium salts of 1-hydroxyimino-2,2-dinitro-1-R-ethanes

The mechanism proposed earlier for explanation of the furoxan ring formation in the nitrosation of dipotassium salts of 1-hydroxyimino-2,2-dinitro- 1-R-ethanes with NaNO2/AcOH was confirmed experimentally by determining the ionization constants of the dinitromethyl and oxime fragments in the starting dipotassium salt and by examining 1H, 13C, 14N, and 15N NMR and mass spectra of isomeric 3(4)-nitro-4(3)-R-furoxans with the 15N(5) and 15N(2) ring atoms, respectively, and 3,4-diarylfuroxan with both 15N-labeled ring atoms. A comparative analysis of the IR and Raman spectra of the 15N-labeled furoxan derivatives obtained and their unlabeled analogs allowed refinement of the literature data on interpretation of the vibrational spectra of furoxan derivatives.

Ceric ammonium nitrate oxidation of aldoximes in aliphatic nitriles as solvents: A new way for synthesis of 1,2,4-oxadiazoles

Oxidation of aromatic aldoximes with one-electron oxidant ceric ammonium nitrate CAN in acetonitrile and propionitrile, has been investigated. Aromatic nitrile oxides, formed in situ, underwent 1,3-cycloaddition with aliphatic nitriles and 5-alkyl-3-aryl-1,2,4-oxadiazoles are produced in moderate to high yields. The mechanism of the reaction based on the transformations of intermediate aldazine di-N-oxides is discussed.