Iodination of phenols in water using easy to handle amine-iodine complexes
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چکیده
منابع مشابه
Taming functionality: easy-to-handle chiral phosphiranesw
The phosphiranes are heterocycles which possess a threemembered phosphorus-containing ring which is highly strained as a result of the small sum of bond angles at the phosphorus atom ( P (P) o2601). The resultant greater s-character in the pyramidalised structure is considered to manifest itself in the form of lowered HOMO and LUMO energy levels, conferring upon the ligand a lower s-donor, but ...
متن کاملAqueous iodine equilibria in Mammalian iodination reactions.
Regulatory activity has been demonstrated in two classes of iodinated organic species: thyroid hormones (T(3) and T(4)) and iodinated lipids (ILs), e.g. 6-iodo-5-hydroxy-8,11,14-eicosatrienoic acid. The formation of iodinated biomolecules requires iodide oxidation. In mammals iodide oxidation is one of several peroxidase-mediated reactions that serve to reduce hydrogen peroxide. I(2) is one of ...
متن کاملKinetic of iodination of phenol and substituted phenols by pyridinium iodochloride in methanol
The kinetics of iodination of the phenol and substituted phenols using pyridiniumiodochloride in methanol has been studied under varying conditions. The rates show first orderkinetics each in pyridinium iodochloride and phenols. The rates of reactions are measured atdifferent temperature and activation parameters for all phenols computed. Hammett plot is foundto be valid and the corrletion betw...
متن کاملIodination of nucleic acids in organic solvents with iodine monochloride.
Iodine monochloride, labeled with 1z51, iodinated ribonucleic acid and deoxyribonucleic acid dissolved as hexadecyltrimethylammonium salts in anhydrous dimethylformamide or N-ethyl acetamide. In the case of RNA (polyuridylate, polycytidylate, and soluble RNA) 5-iodouridine S/-phosphate, 8-iodoguanosine 5’-phosphate, and 5-iodocytidine 5’-phosphate are found. After 24 hours of reaction, 32% of U...
متن کاملEffect on infant mortality of iodination of irrigation water in a severely iodine-deficient area of China.
BACKGROUND Hotien county in Xinjiang province, China, is an area of severe iodine deficiency and has a high infantmortality rate. We investigated whether iodine replacement through iodination of the irrigation water would decrease infant mortality. METHODS We added potassium iodate to irrigation water over a 2 to 4 week period beginning in 1992 in certain areas of three townships (Tusala, Lon...
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ژورنال
عنوان ژورنال: Journal of the Brazilian Chemical Society
سال: 2009
ISSN: 0103-5053
DOI: 10.1590/s0103-50532009001000021