Come up with a detailed mechanism for the following cyclization that also includes all resonance strictures for any intermediates that form. Also, explain why the alkyl bromide portion of the molecule remains intact in the product even though the reaction conditions are strongly basic/nucleophilic. Br Br NaOMe Me Me Me Me MeOH MeO2C 0 °C MeO₂C
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- Which of the following molecules will NOT lead to a successful synthesis of a Grignard reagent upon reaction with magnesium? CI https://ibb.co/54Jw34p 2 Me. OMe https://ibb.co/6655LTH Br но https://ibb.co/2nfzPmX O Me `Br https://ibb.co/wo93ymS 2 Br MeO https://ibb.co/Hq2s6ck 2Give the major product of the following reaction. مشن Ph-CEC-H 1) NaNH, 2) CH3CH2CH2CI, ? O There is no reaction under these conditions or the correct product is not listed here.Use the reaction given below to answer the following questions. A CH₂OH B H₂O+ C + CH3NH3* D a) What are the approximate pKas of compounds A and B? b) The reaction given above is irreversible. Give a detailed explanation of the reaction and reaction mechanism. Your explanation should indicate your knowledge of the reactivity of carboxylic acid derivatives.
- 47) Provide the structure of the major organic product which results in the following reaction. CH₂ Br KI 48) When 1-iodo-1-methylcyclohexane is treated with NaOCH2CH3, the more highly substituted alkene product predominates. When KOC(CH3)3 is used instead, the less highly substituted alkene product predominates. Offer an explanation.Be sure to answer all parts. What is the major product formed when the following alkyl halide is treated with each of the following reagents: [1] NaoČoCH3: [2] NAOCH3; [3] KOC(CH3);? If it is not possible to predict the major product, identify the products in the mixture and the mechanism by which each is formed. Part 1 out of 2 It is possible to predict the major product for: NAOCH3 NAOCOCH3 KOC(CH3)3 O none of the reagentsThe SN2 reaction ur 1-chloro-3-methylbutane with hydroxide OH is relatively slow, but it can » be accelerated by the addition of a small amount of Nal. How can this catalysis be explained? (In other words. how is iodide acting as a catalyst?) CONCISELY explain. nd favor and
- 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) III1.When 2-methyl-1-butanol is dehydrated in an acid medi- um to an alkene, it yelds mainly 2-methyl-2-butene rather than 2-methyl-1-butene. This indicates that the dehydra- tion to an alkene is at least a two-step reaction. Suggest a mechanism to explain the reaction.The reaction of 3-methylpent-2-ene A with HCl can lead to two possible regioisomeric products, B and C, as shown below. HCI + CI A B Explain, using mechanistic reasoning, why isomer B is the major product. Note: in your answer make sure to provide the full reaction mechanism.
- Br Brz CH3 CH3 H3C CH2CI2 H3C Br Electrophilic addition of bromine, Br2; to alkenes yields a 1,2-dibromoalkane. The reaction proceeds through a cyclic intermediate known as a bromonium ion. The reaction occurs in an anhydrous solvent such as CH,Cl). In the second step of the reaction, bromide is the nucleophile and attacks at one of the carbons of the bromonium ion to yield the product. Due to steric clashes, the bromide ion always attacks the carbon from the opposite face of the bromonium ion so that a product with anti stereochemistry is formed. Draw curved arrows to show the movement of electrons in this step of the mechanism. Arrow-pushing Instructions Br: :Br: .CH3 H3C H3C CH3 Br:Meo Мео Meo, ...H Provide the reagents that would result in the given product.Complete the reaction scheme below by filling in missing reagents and/or intermediate products for each step. Please explain.