The alkynylation of various nitrogen- and/or sulphur-containing heterocyclic compounds using hypervalent iodine TMS-EBX by utilization of tertiary amines under mild conditions is described. The developed metal-free methodology furnishes the corresponding alkynylated heterocycles bearing quaternary carbon in high yields.

1,2,3-triazoles are important scaffolds in several fields, and there is still a demand to construct these compounds, most notably the disubstituted 4, 5 compounds. The latter obtained different ways, but 4- 5-halo triazoles generally key intermediates their synthesis. These halogenated compounds an extraordinary platform leading great chemical diversity around 4 positions. However, own pathways...

Abstract. Iodine-initiated new particle formation (I-NPF) has long been recognized in coastal hotspot regions. However, no prior work studied the exact chemical composition of organic compounds and their role I-NPF. Here we present an important complementary study to ongoing laboratory field research on iodine nucleation atmosphere. Oxidation NPF experiments with vapor emissions from real-world...

This study investigated the ability of fifteen disinfectants to eliminate pig-associated Salmonella, specifically focusing on monophasic Salmonella Typhimurium (S. 4,5,12:i:-). The study included three m-cresol, one glutaraldehyde/ formaldehyde, four glutaraldehyde/quaternary ammonium compounds (QAC), two iodine, two peracetic acid and three potassium peroxomonosulphate-based commercial disinfe...

3,7-Diiodo-2,6-di(thiophen-2-yl)benzo[1,2-b:4,5-b']difurans are efficiently prepared by an iodine-promoted double cyclization. This new heterocyclic core is readily modified by the attachment of alkyl chains for improved solubility. The use of these compounds for the synthesis of new conjugated polymers is also reported.

BACKGROUND Povidone iodine (PVP-I) is a chemical complex of polyvinylpyrrolidone (also known as povidone or PVP) and elemental iodine. Iodine containing compounds are widely and commonly used as antiseptics and disinfectants. They are available in various forms like aqueous solution, tincture, aerosol, ointment, or foam. Skin irritation to them is due to the oxidative effects of iodine. Because...

An operationally simple, one-pot, two-step tandem procedure that allows the incorporation of radioactive iodine into aryl amines via stable diazonium salts is described. The mild conditions are tolerant of various functional groups and substitution patterns, allowing late-stage, rapid access to a wide range of 125I-labelled aryl compounds and SPECT radiotracers.

We have found that the use of fluoroalcohol media greatly enhanced the efficiency and scope of the direct dehydrative condensation of arenes and hypervalent iodine(III) compounds; the present clean method has a broad range of applicability as well as unique selectivity in the aromatic substrates, and is highly efficient even in polymer functionalization.

The nucleophilicity of the substituents in iodobenzene pre-catalysts have a huge impact on product selectivity in iodine(III) triggered halogenations, steering the reactivity from solely carbocyclizations towards dihalogenations. Utilizing this catalyst-dependent reactivity a diastereo- and chemoselective dihalogenation method was established allowing the conversion of structurally and electron...