For each pair below, predict which member will be the better nucleophile stating your reasons why. a. NH3 vs H₂O b. CH3O vs OH- c. CH3O vs CH3OH
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- Which one of the following is the best(faster reaction) nucleophile for the 2-bromobutane SN1 reaction ? Select one: a. (CH3)2 CHOH b. (CH3)3 COH c. CH3CH2 OH d. NoneIdentify the stronger nucleophile in the following pair ? CH3NH2, CH3OHWhich one of the following is the best(faster reaction) nucleophile for the 2-bromobutane SN2 reaction ? Select one: a. (CH3)2 CHO- b. (CH3)3 CO- c. CH3CH2 O- d. CH3 O- e. OH-
- 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 centerSelect which molecule is the better nucleophile in the following pair: a). Br− or Cl− in H2O b). CH3O− or CH3OH in H2O c). HO− or HS− in H2O d). I− or Br− in H2OBelow 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?
- Can you match best nucleophile / conditions that will give a successful hydrolysis reaction for each electrophile? 1. Acid chloride 2. Acetic anhydride 3. Ester 4. Amide a. LiAlH4; hydronium work-up b. PCC c. NaH d. CrO3 e. HOEt f. H3O+ or OH- g. H2O h. NaBH4;hydronium work-upBelow is the equation for a nucleophilic substitution reaction and some experimental data. CH3CH2Br + CH3COO- ⇌ CH3CH2CO2CH3 + Br- Rate = k [CH3CH2Br][CH3COO-] Which mechanism would best fit the data?From each pair, select the stronger nucleophile. Q.) CH3COO- or OH-
- Which nucleophile in each pair which would give the faster SN2 rate? (a) (CH3)2S or (CH3)2Se (b) (CH3)3CO- or CH3O-A carbocation intermediate is central to which of these reaction types? E1, E2, SN1, SN2 ? Choose 11.)How is this reaction is carry out ? Show all the steps please arrows and all the movement of electrons. 2.)Show the Jones intermediary