نتایج جستجو برای: tetrabutylammonium iodide

تعداد نتایج: 14230  

Journal: :Chemical & pharmaceutical bulletin 2002
Akito Yasuhara Yousuke Takeda Naoyuki Suzuki Takao Sakamoto

The reaction of ethyl 2-ethynylphenylcarbamate derivative with alkenes in the presence of a palladium(II) catalyst, copper dichloride and tetrabutylammonium fluoride (TBAF) produced 2-substituted 3-ethenylindoles during refluxing. The intramolecular cyclization reaction of ethyl 2-ethynylphenylcarbamates, which have an ethenyl part in the ethynyl group, was also used to produce carbazole deriva...

Journal: :Chemical communications 2001
A Cervilla F Pérez-Pla E Llopis

Tris(benzene-1,2-dithiolate)molybdenum(VI) reacts rapidly and quantitatively with tetrabutylammonium hydroxide to yield the corresponding Mo(V) and Mo(IV) complexes and hydrogen peroxide; the reaction has been executed in dry tetrahydrofuran where the reaction rate shows a fair dependence on complex and OH- concentrations.

2012
Ting-Ting Gao Ai-Ping Jin Li-Xiong Shao

A well-defined N-heterocyclic carbene-palladium(II)-1-methylimidazole [NHC-Pd(II)-Im] complex 1 was found to be an effective catalyst for the Mizoroki-Heck reaction of a variety of aryl chlorides with styrenes. Both activated and deactivated aryl chlorides work well to give the corresponding coupling products in good to excellent yields by using tetrabutylammonium bromide (TBAB) as the ionic li...

Journal: :journal of the iranian chemical research 0
ali benvidi department of chemistry, faculty of science, yazd university, yazd, iran mehdi elahizadeh department of chemistry, faculty of science, yazd university, yazd, iran hamid reza zare, department of chemistry, faculty of science, yazd university, yazd, iran rasoul vafazadeh department of chemistry, faculty of science, yazd university, yazd, iran

an iodide ion-selective pvc membrane sensor based on copper (π)-bis-nphenilsalicyldenaminatocomplex as a novel sensing material is successfully developed. theelectrode showed a good selectivity for iodide ion with respect to common inorganic anions. thesensor exhibited a good linear response with slope of _58.6 ± 0.4 mv per decade over theconcentration range of 5.0 × 10-6 to 1.0 × 10-1 mol l-1,...

Journal: :Applied and environmental microbiology 2014
Hsiu-Ping Li Benjamin Daniel Danielle Creeley Russell Grandbois Saijin Zhang Chen Xu Yi-Fang Ho Kathy A Schwehr Daniel I Kaplan Peter H Santschi Colleen M Hansel Chris M Yeager

The release of radioactive iodine (i.e., iodine-129 and iodine-131) from nuclear reprocessing facilities is a potential threat to human health. The fate and transport of iodine are determined primarily by its redox status, but processes that affect iodine oxidation states in the environment are poorly characterized. Given the difficulty in removing electrons from iodide (I(-)), naturally occurr...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2012
Byron H Farnum Jeffrey J Jou Gerald J Meyer

Seven Ru-tris(diimine) compounds were prepared to study the photooxidation of iodide. Iodide oxidation results in the formation of I-I bonds, and it is therefore relevant to the conversion and storage of solar energy. Iodide oxidation is also a key step for electrical power generation in dye-sensitized solar cells. The mechanistic details of iodide oxidation and I-I bond formation were elucidat...

Journal: :Environmental science. Processes & impacts 2014
Rosie Chance Alex R Baker Lucy Carpenter Tim D Jickells

Recent studies have highlighted the impact of sea surface iodide concentrations on the deposition of ozone to the sea surface and the sea to air flux of reactive iodine. The use of models to predict this flux demands accurate, spatially distributed sea surface iodide concentrations, but to date, the observational data required to support this is sparse and mostly arises from independent studies...

Journal: :Acta Crystallographica Section E Structure Reports Online 2006

2012
Hsiu-Ping LI Robin BRINKMEYER Whitney L. JONES Saijin ZHANG Chen XU Yi-Fang HO Kathy A. SCHWEHR Daniel I. KAPLAN Peter H. SANTSCHI Chris M. YEAGER

129I is a major by-product of nuclear fission that is of concern because of its extremely long half-life (~16 million yrs), perceived toxicity through bioaccumulation, and the increasing inventory of this radionuclide worldwide. Relatively high concentrations of iodate (27.3%) and organoiodine (23.9%) are present in a 129I-conatminated aquifer at the Savannah River Site (SRS), SC, U.S.A. To det...

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