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Encyclopedia > Organopalladium

Organopalladium chemistry is a branch of organometallic chemistry and deals with organic palladium compounds and their reactions. Palladium is often encountered as a catalyst in the reduction of alkenes and alkynes with hydrogen. This process involves the formation of a palladium-carbon covalent bond. Palladium is also prominent in carbon-carbon coupling reactions, as demonstrated in tandem reactions. Organometallic chemistry is the study of chemical compounds containing bonds between carbon and a metal. ... General Name, Symbol, Number palladium, Pd, 46 Chemical series transition metals Group, Period, Block 10, 5, d Appearance silvery white metallic Atomic mass 106. ... An alkene is an unsaturated hydrocarbon containing at least one carbon-carbon double bond. ... Alkynes are hydrocarbons that have at least one triple bond between two carbon atoms. ... General Name, Symbol, Number hydrogen, H, 1 Chemical series nonmetals Group, Period, Block 1, 1, s Appearance colorless Atomic mass 1. ... Covalently bonded hydrogen and carbon in a molecule of methane. ... A coupling reaction in organic chemistry is a catch-all for a range of reactions in Organometallic chemistry where two hydrocarbon radicals are coupled with the aid of a metal containing catalyst. ...


Organopalladium chemistry timeline.

  • 1873 - A. N. Zaitsev reports reduction of benzophenone over palladium with hydrogen.
  • 1894 - Phillips reports that palladium chloride reduces to palladium metal by ethylene.
  • 1907 - Autoclave technology introduced by W. Ignatieff makes it possible to carry out high pressure hydrogenation.
  • 1956 - In the Wacker process ethylene and oxygen react to acetaldehyde with catalyst PdCl2/CuCl2
  • 1968 - The Heck reaction is a coupling reaction of a halogenide with an olefine. The catalyst is Pd(0).
  • 1975 - The Sonogashira coupling is a coupling reaction of terminal alkynes with aryl or vinyl halides.

Front loading autoclaves are common Cassette style autoclaves cycle very quickly Stovetop autoclaves need to be monitored carefully, but have a very large capacity Sterilization bags often have a “sterilization indicator mark” that typically darkens when sterilization temperatures have been reached. ... The Wacker process or the Hoechst-Wacker process (named after the chemical companies of the same name) is the oxidation of ethylene by oxygen to acetaldehyde with a palladium(II) chloride catalyst. ... Ethylene or ethene is the simplest alkene hydrocarbon, consisting of two carbon atoms and four hydrogens. ... General Name, Symbol, Number oxygen, O, 8 Chemical series nonmetals Group, Period, Block 16, 2, p Appearance colorless Atomic mass 15. ... Acetaldehyde, also known as ethanal, is a chemical compound, an aldehyde with formula CH3CHO and structure It is a highly reactive flammable liquid with a strong fruity smell. ... In organic chemistry, the Heck reaction couples an aryl, benzyl, or vinyl halide or triflate with an alkene in basic solution. ... A coupling reaction in organic chemistry is a catch-all for a range of reactions in Organometallic chemistry where two hydrocarbon radicals are coupled with the aid of a metal containing catalyst. ... In organic chemistry, a Sonogashira coupling is a coupling reaction of terminal alkynes with aryl or vinyl halides. ...

References

  • Handbook of Organopalladium Chemistry for Organic Synthesis Ei-Negishi John Wiley (2002) ISBN 0-471-31506
  • Phillips, F. C.; Am. Chem. J. 1894, 16, 255.

  Results from FactBites:
 
Organopalladium - Wikipedia, the free encyclopedia (193 words)
Organopalladium chemistry is a branch of organometallic chemistry and deals with organic palladium compounds and their reactions.
Handbook of Organopalladium Chemistry for Organic Synthesis Ei-Negishi John Wiley (2002) ISBN 0-471-31506
This page was last modified 23:40, 2 November 2005.
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