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- Define the mechanism of acid–catalyzed halogenation ?Draw the structures of the intermediate bromonium and cyclic carbocation and propose mechanisms for all three steps.Provide the mechanism for the Friedel-Crafts acylation reaction of compound Q and 2-(1- phenylethyl)-1,3-dioxolane that leads to the formation of intermediate R.
- Explain and detail the reaction mechanism: NaBr + H2O + n-butyl alcohol = ?4 Show how the compound thiodiazine~C21H26N2S2~decomposes anaerobically and how these end products in turn decompose aerobically to stabilized sulfur and nitrogen compounds.[Rh(PPh3)3Cl] is a precatalyst that can be activated by dissociation of a phosphine ligand to form an active catalyst, B, which is used in the hydrogenation of alkenes. The active catalyst can then undergo oxidative addition in the presence of H2 to form complex C. Propene coordinates to C to form complex D, which then undergoes a 1,2- insertion step to form E. Reductive elimination of propane from E regenerates the active catalyst B. Draw complexes B – E and hence provide a full catalytic cycle, including the activation step, for the hydrogenation of propene
- What is the mechanism of the reaction of HBr addition to 1Butene in the presence or absence of peroxideWrite a mechanism for the bromination of trans-cinnamic acid that proceeds through a bromonium ion intermediate that clearly shows the stereochemical outcome of the reaction. Show (R,S) configurations of the product(s).4b）Give the mechanisms for the following:
- 1-Suggest a mechanism by which the ozone, O3 is being destructed by the presence of oxygen molecule, O2, and the sun light. 2-Methyl chloride, CH3Cl, is another molecule that destructs the ozone layer. Suggest a mechanism for the destruction of ozone by methyl chloride and the sun light.Provide mechanisms for this reactionList the following in increasing order of nucleophilic strength. CH3COO-, H2O, CH3O-, OH-, CH3CH20-