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- Provide the E2 mechanism for β-elimination reactionemploying 2-chloro-2-methylbutane to prepare 2-methyl-2-butene and 2-methyl-1-butene reaction. Use the actual structures of thereactants and products. Explain which of the alkenes is the major product ofthis reaction ?4) Provide a detailed, stepwise mechanism for the acid-catalyzed condensation reaction between cyclohexanone and H2N-CH3.The formation of Br2 from NBS first involves the reaction of NBS with HBr to form an iminol intermediate and molecular bromine. The intermediate then undergoes acid-catalyzed tautomerism to form succinimide, the byproduct of the reaction. Propose a curved-arrow mechanism for the conversion of NBS into succinimide that also accounts for the formation of Br2.
- Give the organic product formed in each of the following reactions, draw a 3-D representation for the product molecule showing the correct configurationWhen 2-Methylcyclohexane-1,3-dione was treated with 3-buten-2-one in the presence of EtONa (base), the corresponding bicyclic compound was obtained. Draw the product of this reaction and explain the reaction mechanism of this reaction with figures and sentences. CH3 de EtONa EtOH ?How is the mechanism for oxymercuration/demercuration reactions of alkenes understood? How are the (Markovnikov) products predicted and what reagents would you need to use to incorporate this reaction into a multistep synthesis strategy. Finally, what makes this a potentially more useful way to synthesize alcohols from alkenes than simple acid hydration?
- Propose a multi-step synthetic route to form the polycyclic molecule on the right hand side using the following reagents on the left hand side of the arrows: i) cyclic ketone; ii) a,ẞ-unsaturated ketone; iii) either the organocuprate OR the organolithium reagent listed; and ii) any other reagents or solvents of your choosing The depicted reagents represent all necessary building blocks that are directly incorporated into the molecule on the right, however you should use additional reagents to help facilitate its construction based on Chem 110 content from Chapters 21 and 23. This is a multi-step synthesis and not all reagents will be used at the same time. When describing your solution, show the stable intermediates along your proposed synthetic route and number the individual synthetic steps. You do not have to worry about stereochemistry in this particular question. For two (2) of your proposed steps, show individual mechanistic arrows that show the flow of electrons during that…Give a complete mechanism for the ionic addition of HBr to 1-methylcyclopentene.The question is: "Draw the curved arrow mechanism for the reaction between pentan-2-one and (CH3)3O– in t-butanol to form an enolate. Draw all electrons and charges on both resonance structures. Then answer the question about the reaction." I got the initial arrows correct, but am not entirely sure what the carbanion intermediate would look like and then what the curved arrows would be to convert it to its final oxanion form
- This is a transesterification reaction. It mechanistically is the same as a Fischer Esterification. Write a mechanism for the reaction. Include all lone pairs and formal charges present throughout the mechanism.(b) Redraw and complete the diagram below to illustrate nucleophilic attack by the N7 atom of a guanine base on a prototypical alkylating agent R-L, where "L" is a leaving group. R Zum N ΝΗ NH₂ -L ?(a) Provide a synthesis for the target molecule. All the carbons in your target must come from methyl acetate. H3C OCH3 methyl acetate Target (b) Provide a second synthesis of the same target that does not use LDA (iPr₂NLi) or an equivalent reagent.
