Which of the following processes does NOT involve a carbocation intermediate? A) SN1 reaction b) SN2 reaction c) electrophilic aromatic substitution d) electrophilic addition of alkenes
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Which of the following processes does NOT involve a carbocation intermediate? A) SN1 reaction b) SN2 reaction c) electrophilic
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- Which factors would favor an SN2 reaction? Choose one or more: A. a strong nucleophile B. a good leaving group C. a high concentration of nucleophileWhat is the major product of the following SN2 reaction? A B C DThe preparation of cyclohexene from cyclohexanol follows which mechanism? (A) SN2 (B) SN1 (C) E2 (D) E1
- Which of the following pairs of reactants and reactions is INCORRECT? a. Lucas reagent : Nucleophilic substitution b. FeCl3 : oxidation c. Neutral KMnO4 : oxidation d. Br2 : electrophilic aromatic substitution e. All of the above are correctly pairedWhich of the following reaction conditions will NOT FAVOR SN1 reaction? a. Sterically hindered alkyl halides b. All of these conditions will favor SN1 c. Reaction with strong base d. Reaction with alcoholsWhat factors will increase the rate of reaction for the SN2 reaction shown? ( Nu = nucleophile, LG = leaving group) 1) concentration of starting material 2) polar protic solvent 3) neutral nucleophile 4) concentration of nucleophile 5) highly substituted starting material 6) less basic leaving group
- Draw an energy diagram for the following SN2 reaction. Label the axes, the starting materials, and the product. Draw the structure of the transition state.Draw the mechanism of the following SN2 reaction. Be sure to indicate stereochemistry in your final product. (2S,3S)-3-Bromo-2-butanol + NaOH (solvent: acetone)Draw the substitution product formed by each of the following SN2 reactions: a. trans-1-iodo-4-ethylcyclohexane and methoxide ion b. cis-1-chloro-3-methylcyclobutane and ethoxide ion
- Which of these statements is correct?A) Sn1 reactions but not Sn2 reactions create andbreak a bond to carbonB) E1 and E2 reactions create a carbon-carbondouble bondC)Sn2 and E2 reactions must have a Lewis baseD) The alkene in electrophilic additions of alkenesis the electrophileE) None of the above statements is correctWhich of the following statements is TRUE? Select one: a. SN2 reactions result in the racemic product if we start from one enantiomer of a chiral substrate. b. The SN2 mechanism does not have any intermediates and has only one transition state. c. SN1 reactions have a carbanion as an intermediate. d. Only the strength of the nucleophile is important for SN2 reactions, not the nature of the leaving group. e. Tertiary alkylchlorides are the best substrates for SN2 reactions.Propose a mechanism for the following reaction: a. Is the initially formed carbocation primary, secondary, or tertiary? b. Is the rearranged carbocation primary, secondary, or tertiary? c. Why does the rearrangement occur?