We report a one-step procedure for the preparation of N-(2-pyrrole)-sulfonamides from sulfonamides and pyrroles. The reaction uses visible light, an acridinium dye as photocatalyst and oxygen as the terminal oxidant for the oxidative C-N bond formation; structures of several reaction products were confirmed by X-ray structure analysis. The reaction is selective for pyrroles, due to the availabl...

In this paper, research into the fabrication and characterization of a new fibre optic sensor for chloride ion detection is reported. This sensor is based on the fluorescence quenching of an acridinium dye, which is covalently bound to polymer substrates, in presence of chloride ions. The active material is formed as a powder and packed in a tablet form. Calibration data shows that this fibre o...

Immunoassays offer selective, sensitive and low-cost tools for the assessment of pesticide exposure through the measurement of parent compounds or key metabolites in biological fluids such as urine, blood or saliva. Recently conducted biomonitoring studies for paraquat and atrazine illustrate the strengths and weaknesses of the immunochemical approach. Development for improved assay throughput ...

The crystal structure of the title compound, C(21)H(15)N(2)O(4) (+)·CF(3)O(3)S(-), is stabilized by C-H⋯O and C-H⋯F hydrogen bonds, by C-F⋯π, N-O⋯π and S-O⋯π inter-actions, and by O⋯O [2.70 (4) Å] and O⋯F [2.85 (1) or 2.92 (1) Å] contacts; π-π interactions are also present. In the packing of the mol-ecules, acridine units are either parallel or inclined at an angle of 12.5 (1)°. The nitrophenox...

A direct method to construct 2-oxazolines and 2-thiazolines from corresponding allylic amides and thioamides is reported. The redox-neutral intramolecular hydrofunctionalization is enabled by a dual catalyst system comprised of 9-mesityl-N-methyl acridinium tetrafluoroborate and phenyl disulphide and exhibits complete selectivity for the anti-Markovnikov regioisomeric products. The cyclization ...

To The Editor: The ACS:180 immunoassay system (Bayer Diagnostics) is an automated random analyzer that uses acridinium ester-based chemiluminescence detection. The architecture of the cardiac marker assays is a heterologous sandwich format, using monoclonal anti-marker antibody immobilized onto paramagnetic particles (capture) and polyclonal goat anti-human myoglobin, creatine kinase MB isoenzy...