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- A student proposes the following reaction mechanism for the reaction in Model 6. Which step inthis mechanism is least favorable? Explain your reasoning.Consider the series of the trans effect: CO, CN-, C2H4 > PR3, H-, CH3- > C6H5- > NO2-, SCN-, I- > Br- >Cl- > py > NH3 > H20 What would be the major product of the following reaction? Select one:Which reactions will proceed faster in a polar, aprotic solvent? (CH3)2CHCH2I+Na+N3−(CH3)2CHCH2I+Na+N3− (CH3)3CBr+HSCH2CH3(CH3)3CBr+HSCH2CH3 CH3CH2CH2Br+Na+CN−CH3CH2CH2Br+Na+CN− (CH3)2CHOSO2CH3+HOCH(CH3)2
- Describe the predominant mechanism( SN1, E1, SN2, E2) in the following reaction to draw the major product(s).In the box to the left of each reaction below, write the mechanism by which it occurs (could be SN1, SN2, or E1, or even 2 of them). Then draw the product(s).Indicate the complete mechanisms for each step of the synthesis below.
- 1. 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 centerMatch the questions with the correct descriptions below: Sn2, E2 E1cb Sn1, E1 (anti) E2, E1cb Sn1, E1 2 steps poor leaving group 2 carbons removed from a carbonyl group carbanion intermediate 3°>allylic, benzylic>2°>1°>CH₃ carbocation intermediate Ist order reaction (r=k[RX]) H-X anti no intermediate 2nd order reaction (r=k[RX][Nu]) polar aprotic solventDraw the molecule: Under second-order conditions (strong base/nucleophile), SN2 and E2 reactions may occur simultaneously and compete with each other.Show what products might be expected from the reaction of 2-bromo-3-methylbutane (a moderately hindered 2∘∘ alkyl halide) with sodium ethoxide. Do not worry about sterechemistry inther SN2 product for this problem. Don't forget about stereochemistry.