Which of the following alkyl bromides would undergo a relatively fast E2-type elimination reaction? O A OB O C D A) Br ...t-Bu Br B) C) Br D) t-Bu Br t-Bu t-Bu
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- 5. For each reaction: i) determine the type of haloalkane (primary, secondary, etc.); ii) determine the nature of the base/nucleophile; predict whether the reaction is SN1, SN2, E1, or E2; iii) draw the structures of the intermediate/transition states: iv) and then, the most favorable product(s) of the following reactions. Br C a) c-d-è-c + on > b)What is the major product of the following nucleophilic ring-opening reaction (Hint: basic condition)? 1. Dimethyl ether CH3MgBr + H2C CHCH3 2. H2O+ ? 1. CH3CH2CHCH3 II. HOCH2CHCH3 III. HOCH2CHCH3 Он CH3 OH A | B III C None D IIWhich alkyl bromide(s) can form the alkene under E2 elimination conditions. Na CH,Br CH;CH,OH Br Br, Br в A C These molecules are unreactive B.
- 2). Which of the following reactions will not produce 2,3-dimethylpentan-3-ol? A) + C) 2. H₂O+ MgBr 2. H3O+ Hu MgBr + B) l D) + CH3MgBr Answer 2. H₂O* MgBr 2. H₂O*10. Which of the following alkyl bromides reacts the slowest with NaSCH3 in DMF? (a) Br (b) Br (c) Br d Br tenuibudWhich of A to F would be the major product of the hydroboration/oxidation of the cyclic alkene? can you type instead of handwriting btw or clean handwriting plz
- • What would be the major elimination product obtained from the reaction of each of the following alkyl halides with hydroxide ion? Note: Major product in E2 reaction is the most stable alkene a) H₂C CH₂ tom, CH, b) H₂C CH, Br .CH, c) CH₂ CH₂ Br CH₂For the following dehydrohalogenation (E2) reaction, draw the major organic product(s), including stereochemistry CI (Cн Сок СH, HII (Cн, СОнCH3 CH, Co H;C-C-0 C SN2 CH3 CH3 alkyl halide The mechanism of this reaction is SN (Sy2 or Sy1?). Explanation: Nucleophile
- *Provide the product(s) of each reaction below. Label each product with the reaction mechanism that produced it (SN2/SN1/E1/E2) and point out major vs. minor elimination products. Pay attention to stereochemistry as appropriate. Br H;CO. ONa CI Nao b) CF3 Ph Br CD,OH c) Ph6). What is the major product of the following reactions? (A) -? coon 1). NaOH in ErOH, then H,O+ 2). 1 eqiv. NaOEt 3). 1 equiv. CH3Br 4). H₂O*, Heat COOB (Intramolecular Claison) COOE (B) CH₂ COOH (D) CH₂ (E) CH3 CH₂8) Which of the following alkyl halide structures will yield only (E)-3-methyl-2-phenyl-2-pentene as a product upon E2 reaction? Please select any and all that apply. ? E2 H3C CH3 B) CH₂CH3 ô Br. Br. H CH3 H₂CH Br CH3 H3C H ô E) Br CH3 12 H CH3 None of the listed alkyl halides will yield the specified product upon E2 reaction.