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Q: Draw all constitutional isomers formed in attached elimination reaction.Label the mechanism as E2 or…
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Q: Draw all constitutional isomers formed in attached elimination reaction.Label the mechanism as E2 or…
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- 1. What is the major organic product generated in the reaction sequence below? (A) ...OH CH3 (B) CH3 OH |||||CH3 "||||||OH 1. H₂SO4/ heat 2. Hg(OAc)2 / H₂O 3. NaBH4 (C) |||||CH3 OH (D) OH CH3Identify the major product of the reaction of an alkene shown below. ||| 1. Hg(OAc)2, H2O 2. NaBH4, NaOH ....... ОН || IV ОН о, ОНQuestion 5. (20 points) Consider the following reaction. + PhLi (2 eq.) then water a) Propose a structure for the final product. b) Give a complete mechanism for the transformation. c) Draw an energy diagram of the transformation and briefly comment on the relative energies of the starting material, final product, and any intermediate(s), and about the rate determining step.
- Arrange the compounds below in order of increasing reactivity in a SN2 reaction. 1. (CH3)2СНCI 2. CH3CH2B1 3. CH3CH2C1 A) 1; 2; 3 В) 3;B 2; 1 C) 1; 3; 2 D) 2; 1; 3 E) 3; 1; 2Q3. For the substitution reactions below, draw out the reactions as shown and answer the following questions for each example: (i) Draw the structure of the unknown product(s) of the reaction. (ii) Identify the nucleophile, electrophile and the leaving group for each step. (iii) Identify each mechanism as Sn1 or SN2. (iv) Insert curly arrows to represent the reaction mechanism. с. Na Product EArrange the following structures based on increasing reactivity to electrophilic aromatic substitution. CAR OCH₂CH₂CH₂ TAR choose your answer... BAR INCREASING REACTIVITY: choose your answer... COOH JAR choose your answer... V K choose your answer.... V
- Describe a sequence of reactions by which 2-hexyne can be prepared from acetylene while minimizing the number of steps required. O 1. NANH2; 2. CH3CH2CH2Br; 3. NaNH2; 4. CH3B1 O 1. NANH2: 2. CH3Br; 3. CH3CH2CH2B1; O 1. NANH2; CH3Br; 3. NANH2; 4. CH3CH2CH2B O A or B O A or CThe first reaction can lead to over substitution. In the second reaction, no over substitution is observed. In 4 sentences or less, provide a reasonable explanation for this observation. AICI3 over substitution product AICI35. Each of the following may participate in an elimination reaction, under the proper conditions. (a) Circle the alpha (a) carbon. (b) Circle the beta (B) carbon(s). (c) Draw the alkene product(s) that may form, with the new double bond between the a and B positions. (d) If more than one alkene product is possible, circle the most stable (Zaitsev) product. X tx + 3
- Put the following carbonyl compounds in order of decreasing electrophilicity 요 (A) A.B.C. D. F.E A, D.B.E.C.F D.C.B.A.F.E E. F.D.A.C. B C.B.A. D. E. F (B) I (c) (D) се 요 (E) O (F)In organic chemistry, an elimination process involves the removal of the hydrogen and a halide (i.e. dehydrohalogenation), in which they are ___ to each other, forming an alkene. syn-orientation co-periplanar anti-periplanar Z- orientationQ2. Show how each of the following compound can be produced from an alkene or alkyne (dihydroxylation, oxidative cleavage): (a) 1. conc KMnO4, KOH, A 2. HO (b) 1. conc KMnO4, KOH, A (c) ? ? 1.03,-78 °C ? 2. HO 2. Zn, HOAc (d) 1.03, -78 °C 2. H₂O2 ? (e) 1. OsO4 H2O2 2. HIO4 (1) ? HO conc KMnO KOH, A ?