concerted reactions

  • 11CIA leak scandal timeline — Note: This subject is also referred to as: CIA leak case timeline , Plamegate scandal timeline , and Plame affair timeline . The CIA leak scandal timeline (also known as the CIA leak case timeline, the Plamegate scandal timeline, and the Plame… …

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  • 12Divinylcyclopropane-cycloheptadiene rearrangement — The divinylcyclopropane cycloheptadiene rearrangement is an organic chemical transformation that involves the isomerization of a 1,2 divinylcyclopropane into a cycloheptadiene or triene. It is conceptually related to the Cope rearrangement, but… …

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  • 13Carbene — In chemistry, a carbene is a highly reactive organic molecule containing a carbon atom with six valence electrons and having the general formula: R1R2C: (two substituents and two electrons). [Organic Chemistry R.T Morrison, R.N Boyd pp 473 478]… …

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  • 14More O'Ferrall-Jencks plot — More O’Ferrall Jencks plots are two dimensional representations of multiple reaction coordinate potential energy surfaces for chemical reactions that involve simultaneous changes in two bonds. As such, they are a useful tool to explain or predict …

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  • 15Proton coupled electron transfer — (PCET) is an electrochemical reaction mechanism in which an electron and proton is simultaneously moved in a concerted mechanism. [Huynh, M. H.; Meyer, T. Chem. Rev. 2007, 107 , 5004 5064.] Mechanism Proton coupled electron transfer (PCET) is… …

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  • 16Oxidation with dioxiranes — refers to the introduction of oxygen into organic molecules through the action of a dioxirane. Dioxiranes are well known for their oxidation of alkenes to epoxides; however, they are also able to oxidize other unsaturated functionality,… …

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  • 17Wolff rearrangement — The Wolff rearrangement is a rearrangement reaction converting a α diazo ketone into a ketene.Ref|Meier1975Ref|Gill1991Ref|Kirmse2002 This reaction was first reported by Ludwig Wolff in 1912.Ref|Wolff1912The rearrangement is catalyzed by… …

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  • 18arts, East Asian — Introduction       music and visual and performing arts of China, Korea, and Japan. The literatures of these countries are covered in the articles Chinese literature, Korean literature, and Japanese literature.       Some studies of East Asia… …

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  • 19Europe, history of — Introduction       history of European peoples and cultures from prehistoric times to the present. Europe is a more ambiguous term than most geographic expressions. Its etymology is doubtful, as is the physical extent of the area it designates.… …

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  • 20Claisen rearrangement — The Claisen rearrangement (not to be confused with the Claisen condensation) is a powerful carbon carbon bond forming chemical reaction discovered by Rainer Ludwig Claisen. The heating of an allyl vinyl ether will initiate a [3,3] sigmatropic… …

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