Iodine Iii
Mostrando 1-12 de 21 artigos, teses e dissertações.
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1. Iodine(III)-Mediated Ring Contraction Reactions: Synthesis of Oxygen- and Nitrogen-Substituted Indanes
The synthesis of oxygen- and nitrogen-substituted indanes was successfully performed by iodine(III)-mediated ring contraction of 1,2-dihydronaphthalenes. Acetoxy and benzoyloxy alkenes afforded indanes in 60-71% yield, irrespective of their position on aromatic ring. Similarly, the nitrogen containing substrates protected with 9-fluorenylmethyloxycarbonyl (F
J. Braz. Chem. Soc.. Publicado em: 2016-10
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2. External beam radiation therapy and a low-dose-rate brachytherapy boost without or with androgen deprivation therapy for prostate cancer
Purpose To assess outcomes with external beam radiation therapy (EBRT) and a low-dose-rate (LDR) brachytherapy boost without or with androgen deprivation therapy (ADT) for prostate cancer. Materials and Methods From January 2001 through August 2011, 120 intermediate-risk or high-risk prostate cancer patients were treated with EBRT to a total dose of 4,5
Int. braz j urol.. Publicado em: 2014-08
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3. Estudo por espectrometria de massas de soluções de hidróxi(tosilóxi)iodobenzeno: propostas para mecanismos de desproporção
Solutions of [hydroxy(tosyloxy)iodo]benzene (HTIB or Koser's reagent) in acetonitrile were analyzed using high resolution electrospray ionization mass spectrometry (ESI-MS) and electrospray ionization tandem mass spectrometry (ESI-MS/MS) under different conditions. Several species were characterized in these analyses. Based on these data, mechanisms were pro
Quím. Nova. Publicado em: 2012
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4. Metal-free synthesis of indanes by iodine(III)-mediated ring contraction of 1, 2-dihydronaphthalenes
Um protocolo livre de metais foi desenvolvido para sintetizar indanos através da contração de anel de 1, 2-di-hidronaftalenos promovida por PhI(OH)OTs (HTIB ou reagente de Koser). Este rearranjo oxidativo pode ser realizado em diversos solventes (MeOH, CH3CN, 2 , 2, 2-trifluoroetanol (TFE), 1 , 1, 1, 3, 3, 3-hexafluoroisopropanol (HFIP), e uma mistura 1:4
Journal of the Brazilian Chemical Society. Publicado em: 2011-09
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5. Radioiodine plus recombinant human thyrotropin do not cause acute airway compression and are effective in reducing multinodular goiter
Recombinant human thyrotropin (rhTSH) reduces the activity of radioiodine required to treat multinodular goiter (MNG), but acute airway compression can be a life-threatening complication. In this prospective, randomized, double-blind, placebo-controlled study, we assessed the efficacy and safety (including airway compression) of different doses of rhTSH asso
Brazilian Journal of Medical and Biological Research. Publicado em: 2010-03
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6. Reações de expansão de anel e de ciclização promovidas por iodo (III) e elucidação do mecanismo de desproporção de iodobenzeno diacetato e de hidróxi(tosilóxi)iodobenzeno por espectrometria de massas por electrospray / (III) promoted ring expansion and cyclization reactions and elucidation of disproportionation mechanism from iodobenzene diacetate and hydroxy(tosyloxy)iodobenzene by electrospray mass spectrometry
Esta tese de doutorado está dividida em três partes. Na primeira parte é tratada a expansão de anéis de 1-alquenil-cicloalcanóis promovida por hidróxi(tosilóxi)iodobenzeno (HTIB), com ênfase na síntese de anéis de sete membros. A metodologia se mostrou versátil, possibilitando que diferentes compostos de anéis expandidos pudessem ser obtidos a p
Publicado em: 2010
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7. Ultrasonographic determination of goiter prevalence in southern Brazilian schoolchildren
The aim of the present study was to estimate the prevalence of goiter in schoolchildren in a formerly iodine-deficient region in southern Brazil by assessing the relationship between body surface area (m2) and thyroid volume (ml) measured by ultrasonography. A populationbased sample of 1,094 randomly selected schoolchildren (6 to 14 years; 556 boys and 538 g
Publicado em: 2010
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8. Ring Contraction of 1,2-Di-hydronaphthalenes with Iodine(III) and its Application in Total Synthesis of (±)-Indatraline / Reação de contração de anel de 1,2-di-hidronaftalenos com iodo(III) e sua aplicação na síntese total da (±)-indatralina
Esta tese mostra a síntese total da (±)-indatralina, representando uma aplicação sintética das reações de contração de anel de 1,2-di-hidronaftalenos mediadas por iodo(III). A molécula alvo é uma trans-3-fenil-1-indanamina, que é uma candidata para o tratamento de viciados em cocaína. Na rota proposta para a síntese da (±)-indatralina, o mater
Publicado em: 2008
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9. Extraction of pequi pulp oil (Caryocar brasiliense): influence of the operational variables / ExtraÃÃo do Ãleo da polpa de pequi (Caryocar brasiliense): influÃncia das variÃveis operacionais
The use of pequi oil in industrial products has led to the study by processes alternative to handmade extraction. The objective is to arrive adequate to its extraction and which warrants the quality of the oil. In this essence, it is necessary to study the influences of the variables on the yield and quality of the extraction of pequi pulp oil. In chapter II
Publicado em: 2007
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10. Reações de ésteres ß,Y-insaturados com tálio(III) e de 1,2-di-hidronaftalenos com iodo(III) / Reactions of ß,Y-unsaturated esters with thallium(III) and 1,2-dihydronaphthalenes with iodine(III)
This dissertation presents a study about the ring contraction of ß,y-unsaturated esters promoted by thallium trinitrate (TTN) and 1,2-dihydronaphthalenes promoted by hydroxy(tosyloxy)iodobenzene (HTIB). Both studies aimed the synthesis of functionalizated indans. The reaction of a series of ß,y-unsaturad esters with TTN in acetic acid led to the correspond
Publicado em: 2006
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11. ANÁLISE DO CONSUMO E CONSTITUINTES QUÍMICOS DE VINHOS PRODUZIDOS NA QUARTA COLÔNIA DE IMIGRAÇÃO ITALIANA DO RIO GRANDE DO SUL E SUA RELAÇÃO COM AS FRAÇÕES LIPÍDICAS SANGÜÍNEAS / ANALYSIS OF CONSUMPTION AND CHEMICAL COMPONENTS OF WINE PRODUCED IN THE QUARTA COLONIA OF ITALIAN IMMIGRATION IN RIO GRANDE DO SUL AND ITS RELATION WITH BLOOD LIPIDIC FRACTIONS
The Quarta Colônia of Italian immigration and centenary existence, which is located in the central region of the state, produces homemade wine from non-vining varieties such as Bordeaux, Isabel and Concord, among others. In this way, the aim of this work was to analyze the chemical characteristics of these wines, as well as, their relation with the lipidic
Publicado em: 2004
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12. Estudos de Novas Metodologias Sintéticas para Heterocíclicos Quinolônicos, Triazólicos e Síntese de Catalisadores Quirais
In order to obtain quinolone nucleosides a new methodology based on construction of the heterocyclic ring at the carbohydrate moiety was devised. The carbohydrates: 1-methoxy-2,3-O-isopropylidene-α-D-ribofuranose (108), 1-methoxy-2,3-O-isopropylidene-5-O-methanesulfonyl-β-D-ribofuranose (109a) and 1-methoxy-2,3-O-isopropylidene-5-O-p-toluenesulfony
Publicado em: 2004