• organic chemistry
  • The range of chemicals studied in organic chemistry include hydrocarbons (compounds containing only carbon and hydrogen), as well as myriad compositions based always on carbon, but also containing other elements, especially oxygen, nitrogen, sulfur, phosphorus (these included in many organic chemicals in biology) and the radiostable elements of the halogens. (wikipedia.org)
  • PAHs
  • This timely reference presents the state of the art of the emerging and rapidly changing field of bioremediation of chlorinated solvents, PCBs, and other chlorinated compounds, as well as PAHs, both in situ and on site. (powells.com)
  • reaction
  • The reaction provides ready access to polycyclic compounds with a great deal of stereoselectivity. (wikipedia.org)
  • Vinylbutadiene (dendralene) was first prepared in 1955 by pyrolysis of a triacetate: This compound reacts with two equivalents of maleic anhydride in a tandem DA reaction: With benzoquinone the reaction product was a linear polymer. (wikipedia.org)
  • This compound is converted to a Grignard reagent by action of magnesium metal which is then reacted with copper(I) chloride to an organocopper intermediate which is in turn dimerized using copper(II) chloride in an oxidative coupling reaction to give the butadiene dimer called dendralene. (wikipedia.org)
  • Impurities, which may or may not be present in commercial samples, can catalyze the explosive decomposition reaction of this compound in the presence of oxygen. (wikipedia.org)
  • A reaction that forms an arene compound from an unsaturated or partially unsaturated cyclic precursor is simply called an aromatization. (wikipedia.org)
  • mixtures
  • Others are mixtures: curtisite contains several PAH compounds, including dibenzofluorine, picene, and chrysene, while the most common components of idrialite are tribenzofluorenes. (wikipedia.org)
  • molecules
  • This increased interest in polynitrogen compounds in the late twentieth century was due to the advance of computational chemistry which predicted that these types of molecules could be used as potential high energy density matter (HEDM) sources. (wikipedia.org)
  • 3 radical, binding of two N 2 molecules in the excited state, and extrusion from polycyclic compounds, none of which could be accomplished experimentally. (wikipedia.org)
  • Drugs
  • Some compounds in this class are psychoactive drugs including stimulants, psychedelics and empathogens. (wikipedia.org)
  • Many of the more common compounds were banned in the UK on June 2013 as temporary class drugs, while others have been made permanently illegal in various jurisdictions. (wikipedia.org)
  • equivalent
  • In 2008, within 50 km of oil sands upgrading facilities, the loading to the snowpack of airborne particulates was 11,400 T over 4 months and included 391 kg of polycyclic aromatic compounds (PAC), equivalent to 600 T of bitumen, while 168 kg of dissolved PAC was also deposited. (pnas.org)
  • This is in contrast to carbon containing compounds which have lower energies of formation for an equivalent number of single or double bonds than for a C≡C triple bond, allowing for the thermodynamically favorable formation of polymers. (wikipedia.org)
  • situ
  • These rearrangements are performed in the presence of unsaturated compounds which undergo [2+cycloadditions with the in situ generated ketenes. (wikipedia.org)
  • chemical
  • Frémy's salt, discovered in 1845 by Edmond Frémy (1814-1894), is a chemical compound and a strong oxidizing agent. (wikipedia.org)
  • Study of structure includes many physical and chemical methods to determine the chemical composition and the chemical constitution of organic compounds and materials. (wikipedia.org)
  • titanium
  • e.g., zinc, copper, palladium, nickel, cobalt, titanium and chromium) Finally, organic compounds form the basis of all earthly life and constitute a significant part of human endeavors in chemistry. (wikipedia.org)
  • structure
  • The gas-phase molecular structure of dendralene has been reported The -dendralene compound was reported in 2009: in a successive Kumada-Tamao-Corriu coupling and Negishi coupling. (wikipedia.org)
  • By reductive cyclization of the D ring, the octacyclic core structure (compound 7) was made. (wikipedia.org)
  • single
  • The bonding patterns open to carbon, with its valence of four-formal single, double, and triple bonds, as well as various structures with delocalized electrons-make the array of organic compounds structurally diverse, and their range of applications enormous. (wikipedia.org)
  • systems
  • Depending on whether the tether that links to the dienophile is attached to the end or the middle of the diene, fused or bridged polycyclic ring systems can be formed. (wikipedia.org)