A metal-free tandem reaction, initiated by the generation of a diazonium cation and followed by cycloetherification, was developed. Acid-promoted de-tert-butylation of N-nitroso N-tert-butylamine was used to generate a diazonium cation in situ, demonstrating a new application of nitroso chemistry. This reaction was employed in the synthesis of substituted benzofuran-3(2H)-ones and dihydrobenzo[...

The formation of gratings on gold nanoprisms arrays by plasmon-mediated reduction a diazonium salt is investigated. Nanosphere lithography (NSL) used to produce large surfaces that are effective at reducing salts producing hot electrons through excitation localized surface plasmon resonances (LSPRs). Using single beam irradiation, we report here the periodic structures formed from and follow NS...

The synthesis and characterisation of a series of new gold- and palladium-containing symmetrical imidazolium salts are described which display significant cation-dependent effects determined by the structure of the alkyl chains of the imidazolium motifs. Whereas direct reduction of the Pd salts can produce stable nanoparticles (NPs) coated by imidazolium salts, the addition of strong base to th...

The specific capacity of activated carbon electrodes for supercapacitors may be enhanced with additional faradaic redox reactions by grafting electroactive aromatic molecules heteroatoms that act as centers. Such enrichment was demonstrated recently anthraquinone and catechol using diazonium chemistry. Here, trihydroxybenzene, which has obvious advantages, successfully grafted, yielding a mass ...

ABSTRACT. Benzoylacetone (1) underwent a series of multi-component reactions with aromatic aldehydes and malononitrile or ethyl cyanoacetate to produce the pyran derivatives 4a-f. The latter compounds reacted yield condensation products 5a-m. On other hand, reaction 4a-f either diazonium salts 6a-c yielded arylhydrazone 7a-i. adehydes cyclohexan-1,3-dione produced 9a-c. Compound 1 Gewald’s elem...