Practice Problem 07.70b Draw the mechanism for the following reaction: conc. H2SO4 Heat "OH
16. Draw the mechanism and product for the following elimination. OH conc. H2SO4 heat
8.34 Draw a mechanism for each of the following E1 processes: OH Br conc. H2SO4 Heat БЕТОН Heat (b) EtOH. Her (C) ОН conc. H2SO4 Heat OPUS (d) D
Draw a mechanism for the following transformations: OH H2SO4 +H2O heat OH H2SO4 heat (hint 1° carbocations are too unstable And are prone to rearrangements. Which bond moved to make a More stable carbocation?)
Ans! 79. Draw the mechanism and product for the following elimination. ОН conc. H2SO4 heat Ans: 81. Draw the mechanism and product for the following elimination. Br KOtBu 88. Is the following more likely a nucleophile or a base? YNY Ans: 90. Which of the following is the strongest nucleophile? = =0 MeOH Meo B. U. ODD. A. Ans:
Choose the best answer for the major product for the reaction below. OH H2SO4 (conc) heat OSO H OSO,
65. Draw the product of the following dehydration reaction. H2SO4 OH Ans: 68. Draw the mechanism for the following dehydration. LOH H2SO4 Ans: 71. Draw an energy diagram for the following reaction, assuming that it is exothermic. OH H2SO4 Ans: 73. What are the steps of arrow pushing involved in the following mechanism? ОН H2SO4 Ans:
1.Predict all the products for the following reaction. Which is the major product? Why? + conc. H2SO4 heat OH 2. Give an alcohol that you could use to synthesis each of the following alkenes? din 3.Draw the mechanisms for the following two schemes (two separate mechanisms). Only show the mechanism for the most stable product for each scheme. What is the key difference in the mechanistic steps between these two reactions? ОН ОН conc H2SO4 conc H2SO4 heat heat
of the following transformations. 28.76 Propose a mechanism for each of the following conc. H,804 Heat conc. H2SO4 Heat conc. H2SO4 Heat ЕТОН Heat NaOEt EtOH
29. Give the curved arrow mechanism for each reaction. DOH H2SO4, H,O heat F H2SO4, H2O . х арин OH H SOHO heal 30. For the following reaction, OH H,SO,H,O heat a. Draw the curved arrow mechanism. b. Use the mechanism to explain why acid is a catalyst in the dehydration reaction. C. Draw the energy diagram.
Practice Problem 12.38 Propose a mechanism for the following reaction: BrMV он OH Nah 12.38a1 Draw step 1 of the mechanism using curved arrows. Include lone pairs and charges in your answer. н Edit I