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- 12) Use the curved arrow formalism to show the movement of electron pairs in the following reaction and label each reactant as a nucleophile or an electrophile. CHÍNH CHỊCH, + CO Học Nha CH₂CH₂CIDetermine the mechanism of nucleophilic substitution of each reaction and draw the products, including stereochemistr CH₂CH3 CI Br + CN d. + CH3COOH a. acetone + -OCH3 e. DMF f. b. C. ||||| a ||||| Br H Br CH2CH2CH3 + CH3OH DMSO H CH3 CI Br + OCH₂CH3 + CH3CH₂OH24. Which product is formed by the reaction ? A) | B) || C) ||| D) IV Br ОН NaH Br ... هستم IV
- Arrange the following compounds from least reactive to most reactive toward nucleophilic addition. 1 AI > III III >> A > | > Ilo II III H IVIdentify the major product of the reaction of an alkene shown below. ||| 1. Hg(OAc)2, H2O 2. NaBH4, NaOH ....... ОН || IV ОН о, ОНTReferences] Indicate, by letter(s), the position(s) on the ring at which substitution occurs when the aromatic compounds shown undergo bromination with Br, FeBr3 (when necessary). .H CN HO
- I H Ph Br In an E2 elimination reaction, the leaving group and the hydrogen atom must be anti-coplanar for this concerted reaction to occur. ||| Identify which of the following structures has the hydrogen atom and the leaving group aligned anti-coplanar. CH3 Ph Ph H TI F H || OH H Ph H CH3 CH3 Br Ph Br A) I B) II C) IIIThe reactants, intermediates, final products, and all curved arrows showing bonds forming andbreaking are collectively referred to as the mechanism of a reaction. For the following reactants: a. Explain why the original statement of Markovnikov’s rule does not help in this case, but themodern restatement of Markovnikov’s rule tells you which carbon will get the X (Cl). b. Show the mechanism of the most likely addition reaction between the reactants.What reagent/reagents is/are necessary to transform the starting molecule into the desired product? OH ? CH;CHCH,CH || CH3CH
- Predict the product of this E2 elimination reaction. ||| Br NaOCH3 || = IV027 In Part 1 add the curved arrows to the nucleophilic acyl substitution reaction mechanism. In Part 2, answer the multiple-choice question about the reaction in Part 1. Part 1 4 See Periodic Table O See Hint :0: :Br: Add the missing curved arrow notation. S CI Br Part 2 Which statement is most correct regarding the equilibrium for the above reaction? Choose one: O The equilibrium favors the right (i.e., Kea > 1) because acetate is a better leaving group than bromide. O The equilibrium favors the right (i.e., Kea > 1) because bromide is a better leaving group than acetate. O The equilibrium favors the left (i.e., Keq« 1) because acetate is a better leaving group than bromide. O The equilibrium favors the left (i.e., Keg 1) because bromide is a better leaving group than acetate. +Draw curved arrows to show the movement of electrons in the step of the mechanism shown below. Arrow-pushing Instructions X→UU :0: :O: || CH3-C-CH₂-C-OEt :OEt :O: || :0: || CH3-C—CH—C—0—OEt + EtO: H