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A: The correct answer is given below
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- (S)-2-Butanol, CH3CH2CHOHCH3, slowly racemizes on standing in dilute aqueous sulfuric acid. Explain, illustrating with a mechanism.Justify the generation of the following products through mechanisms PD: Mechanisms= SN1,SN2,E1 etcGive steucture of organic and inorganic products of the following sn2 reaction, and identify the nucleophile, substrate, and leaving group.
- Benzenediazonium carboxylate decomposes when heated to yield N2, CO2, and a reactive substance that can't be isolated. When benzenediazonium carboxylate is heated in the presence of furan, the following reaction is observe. Propose a structure for the intermediate in this reaction.The reaction of 1-iodopropane with potassium thiocyanate (KSCN) in certain solvents results in the formation of two isomeric products, propylthiocyanate and propylisothiocyanate (see scheme below), via the SN2 reaction mechanism. Attempts to prepare a similar mixture of these same isomeric products (propylthiocyanate and propylisothiocyanate) starting from 1-propene is illustrated below. Despite the strong acidity of thiocyanic acid (recall pKa = 1.1), this addition reaction does not lead to either of the products indicated. Based on your knowledge of alkene addition reactions, explain this experimental result.Suggest reasonable mechanisms for the following reactions:
- Provide the retrosynthetic analysis for following compounds. Suggest disconnection. Use FGIs if needed. Show the synthons, the charge patterns (where applicable), and the synthetic equivalents (SE). No need to show the forward - synthesis.Understanding different substitution and elimination pathways gives useful insight into chemical mechanisms and pathways. Give the different important aspects of the Sn1, Sn2, E1, E2, and E2cB reactions.Suggest ways of synthesizing the compound, how would youmake the disconnections and what are the synthons?
- Predict the coupling products of the organocuprate, Heck, and Suzuki reactions,and use these reactions in synthesesOutline a feasible laboratory synthesis of 2-ethylcyclohexanone (shown below) starting with chlorocyclohexane (also shown below) using any available compounds or reagents. More than one reaction is required. Hint: Consider possible use of one or more of the following reagents: CH3C(=O)-O-OH , CrO3/H+ (oxidizes 2o alcohol to ketone), CH3ONa / HOCH3 (strong base; used for E2 eliminations), any Type I organometallic compound.Draw/outline a reasonable and detailed mechanism for the dehydration of 2-methylcyclohexanol catalyzed by phosphoric acid. Use curved arrows to show the flow of electrons and draw the structures of all intermediates and byproducts formed in the reaction. Predict and rationalize the expected product distribution based on thermodynamic aspects