Group VII atom containing polymers such as chlorine rubber, and fluorine rubber tend to show a high degree polarity due to their high molar attraction constants [1]. Their practical applications include molded parts, cable, hose, o-rings, etc., which require chemical resistance. In molding the final products, there are several problems such as shrinkage, porosity, blisters, poor knitting, backr...

The article presents a review of the literature concerning physiological role fluorine. effect fluorine on extent and nature endemic disease population are analyzed. Was found that despite significant distribution in large chemical activity its compounds, necessity microelement for normal development animals humans not well studied yet. Analysis suggests belongs to elements, which have overall ...

ARTICLES Organic Fluorine Chemistry: C. G. Krespai.................................. Expanding rapidly, the science of these compounds has assumed both theoretical and practical importance. The Biological Synthesis of Cholesterol: K. Bloch .............................. Predation, Body Size, and Con-mposition of Plankton: J. L. Brooks and S. I. Dodson ... The effect of a marine planktivore on l...

The purpose of this review is to describe various geological and chemical factors that are controlling the fluoride concentration in soil, rocks, water, air, plants, animals and food stuffs. Further to discuss well established method that is used as the standard methods of analysis. Rock, Soil, Water, air, plants, animals, foodstuffs all contain fluoride in widely varied concentration. Industri...

Application of a fluoroiodine analogue of the Togni reagent was studied in fluorocyclization reactions. In the presence of a transition-metal catalyst the applied fluoroiodine reagent can be used for aminofluorination, oxyfluorination, and carbofluorination reactions. The described procedure has a very broad synthetic scope for preparation of functionalized hetero- and isocyclic compounds havin...

A copper-catalyzed regio- and intermolecular aminofluorination of styrenes has been developed. In this reaction Ph-I=N-Ts and Et3N·3HF act as nitrogen and fluorine sources, respectively. The obtained β-fluoro-N-Ts-phenethylamines can be N-alkylated with subsequent deprotection affording the corresponding β-fluoro-N-alkylated phenethylamines, which are interesting building blocks for compounds a...

Compounds belonging to a new class of quinolones in which the fundamental C-6 fluorine atom was replaced were evaluated for in vitro antibacterial activity against 32 Helicobacter pylori strains. Since these substitutions resulted in higher inhibitory activities, these new desfluoroquinolones may be useful in eradicating H. pylori infections.

We discuss the use of crystal bolometers to search for weakly interacting cold dark matter particles in the galactic halo. For particles with spin dependent nuclear interactions, such as photinos, Majorana neutrinos and higgsinos, we show that compounds of boron, lithium, or fluorine are optimal detector components. We give careful estimates of expected cross-sections and event rates and discus...