Determine the product(s) of the following multistep reaction. Draw the product(s) after Step 1 in Part 1 and the product(s) after Step 2 in Part 2. Be sure to include stereochemistry. 1) Na (9), NH3 (), -78°C ? 2) NBS, CC4, 77°C, 5h
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- A carbocation intermediate is central to which of these reaction types? E1, E2, SN1, SN2 ? Choose 11. Which of the following is the strongest nucleophile? Refer to the diagram below with an MeOH, MeSH, etc. 2. Which of the following is true about the stereochemistry of SN1 reaction?a.retention of configuration at the electrophilic centerb.50:50 mixture of retention and inversion of configuration at the electrophilic centerc.inversion of configuration at the electrophilic centerd. slightly more inversion than retention at the electrophilic centerQ3. 2-Bromopentane, when treated with alcoholic KOH yields a mixture of three alkenes A, B and C. Identify A, B and C. Which is predominant? Q4 Which statement below about Sn1 reactions is incorrect? (A) SN1 reactions are stepwise and have intermediates. (B) The slow step in a SN1 reaction is formation of the carbocation intermediate. (C) SN1 reactions have first order kinetics which means only the alkyl halide is involved in the rate limiting step. (D) The products of a SN1 reaction will be a pair of enantiomers. (E) An aprotic solvent is best for Sn1 reactions as they tend to help stabilize carbocation intermediates.
- Why does the final product has the opposite configuration compared to the reactant? Shouldn’t it form OMs first, then OMs gets substituted by Cl- via Sn2 (the 1st inversion of configuration) then the Cl- gets substituted by OCH3- (the 2nd inversion of configuration? To my understanding 2 inversions = same configurationDraw the products of the two step reaction sequence shown below. Use wedge and dash bonds to indicate stereochemistry where appropriate. Ignore inorganic byproducts.draw the product of the reaction shown below. Use wedge and dash bonds to indicate stereochemistry where appropriate. Ignore inorganic byproducts.
- The use of curved arrows is a powerful tool that illustrates even complex reactions. a.Add curved arrows to show how carbocation A is converted to carbocation B. Label each new σ bond formed. Similar reactions have been used in elegant syntheses of steroids. b.Draw the product by following the curved arrows. This reaction is an example of a [3,3] sigmatropic rearrangement, as we will learn in Chapter 25.Complete the reactions given below, write down the type of mechanism (SN1, SN2, E1, E2)?The synthesis above can be performed with some combination of the reagents listed below. Give the necessary reagents in the correct order. Be sure to consider stereochemistry and regiochemistry.A. NaOHB. mCPBAC. OsO4, tBuOOHD. NaHE. H2, LindlarF. CH3CH2CH2BrG. CH3CH2ClH. NaNH2I. H3O+J. Na, NH3(l)
- Below is the equation for a nucleophilic substitution reaction and some experimental data. CH3CH2Br + CH3COO- ⇌ CH3CH2CO2CH3 + Br- ΔH=-75 kJ/mol Rate = k [CH3CH2Br][CH3COO-] Which reaction energy profile would be the best representative of the data provided?- For the dehydration shown, use curved arrows to show the formation of the carbocation intermediate in the presence of sulfuric acid H2SO4H2SO4, then draw the structures of the minor and major products of the elimination. Picture: Cyclohexane (no double or triple bonds) with a methyl group and an alcohol group (HO 4e- on O) on C1 (bottom) reacting with H2SO4 -> "Major and Minor Products" -The H2SO4H2SO4 is abbreviated as H+H+ in the drawing module. Do not delete any pre‑drawn bonds, charges, or lone pairs. If you accidentally make a mistake, remove the last change by using the undo button on the lower left or revert the drawing palette to the original state by selecting the More menu, then select Reset Drawing. Step 1: Use curved arrows to complete the protonation mechanism of the alcohol. Step 2: Use a curved arrow to show the formation of the carbocation intermediate for the elimination. (Picture 1) -Step 3: This tertiary carbocation intermediate readily undergoes…Fill in the information based on the type of reaction mentioned in each column. A. Draw the line angle diagram of a substrate that will undergo SN1, SN2, E1, E2 B. Draw the line angle diagram of a nucleophile that can be used for SN1, SN2, E1, and E2 C. Draw the line angle diagram of a solvent that can be used with SN1, SN2, E1, and E2 D. Write down if the stereochemistry of the product will be inversion, retention, or a 50:50 ratio of inversion and retention