Results 201 to 210 of about 15,196 (263)

Thermochemistry of some barium compounds

Journal of Chemical Thermodynamics, 2002
Abstract The molar enthalpies of reaction of metallic barium with 0.047 mol·dm−3 HClO4 as well as the molar enthalpies of dissolution of BaCl2 in 1.01 mol·dm−3 HCl and in water have been measured at T=298.15 K in a sealed swinging calorimeter with an isothermal jacket.
A.S. Monayenkova   +3 more
exaly   +2 more sources

Selective Propargylation of Azo Compounds with Barium Reagents

Synlett, 2010
A Barbier-type propargylation of azo compounds with γ-trialkylsilylated propargylic bromides has been achieved using reactive barium as a low-valent metal in THF. Corresponding propargylated hydrazines (α-adducts) were exclusively formed not only from azobenzenes (diaryldiazenes) but also from dialkyl azodicarboxylates.
Kazuhiro Yoshida, Akira Yanagisawa
exaly   +2 more sources

Selective Propargylation of Carbonyl Compounds and Imines with Barium Reagents

Chemistry - an Asian Journal, 2008
AbstractA Barbier‐type regioselective propargylation of aldehydes and ketones with (3‐bromobut‐1‐ynyl)trimethylsilane has been achieved using reactive barium as a low‐valent metal in THF. Especially in the case of ketones, the corresponding homopropargylic alcohols form almost exclusively. In the reaction of α,β‐unsaturated carbonyl compounds, only 1,2‐
Takayoshi Arai, Akira Yanagisawa
exaly   +3 more sources

Local Environment of Yttrium in Y-Doped Barium Cerate Compounds

Chemistry of Materials, 2006
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Antonella Balerna   +2 more
exaly   +4 more sources

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