chapter 18 ketones and aldehydes Which is a step in the mechanism for the acid-catalyzed hydration...
In the mechanism of the acid-catalyzed halogenation of ketones, which of the following is NOT true? Select one A. The rate-determining step is the attachment of a halogen atom to an enol intermediate. O B. The first step is attachment of Ht to the carbonyl oxygern. O C. The reaction rate is independent of the halogen (X2) concentration D. The rate-determining step is the loss of an H* from an alpha- carbon to form an enol intermediate
What is the organic product In the mechanism of the acid-catalyzed halogenation of ketones, which of the following is NOT true? A. The rate-determining step is the attachment of a halogen atom to an enol intermediate B. The first step is attachment of H^+ to the carbonyl oxygen. C. The reaction rate is independent of the halogen (X_2) concentration. D. The rate-determining step is the loss of an H^+ from an alpha-carbon to form an enol Intermediate.
1. In step I the alpha bromination of ketones is acid catalyzed. a. What acid is formed as Step 1 progresses? b. Why are alpha bromination reactions acid catalyzed? 2. Substitution of bromine by t-butyl amine is the second step of the reaction today. Secondary alkyl halides can undergo substitution by Sn1 or Sn2 mechanisms. Explain (in terms of electronic interactions) why an Sn2 mechanism is favored when the halogen is alpha to a carbonyl. (Hint: Like charges on adjacent atoms are unfavorable)
Write out the mechanism of acid catalyzed hydration of acetone and ethanol:
Question Completion Status: QUESTION 23 Which of the following statements is true of aldehydes and ketones? a. Both aldehydes and ketones are easily oxidized. b. Neither aldehydes nor ketones are easily oxidized. c. Aldehydes are easily oxidized, but ketones cannot be readily oxidized. Od. Ketones are easily oxidized, but aldehydes cannot be readily oxidized QUESTION 24 Which of the following compounds has the lowest boiling point? O a. acetone b. formaldehyde O c 3-octanone d. cyclopentanone QUESTION 25 Anster the...
Draw the mechanism for the acid catalyzed hydration of 3-methylpent-2-ene.
2. Acid-catalyzed hydration of 3,3-dimethyl-1-butene produces 2,3-dimethyl-2-butanol. Show a mechanism for this reaction. 3. Acid-catalyzed hydration of 1-methylcyclohexene yields two alcohols. The major product does not undergo oxidation, while the minor product will undergo oxidation. Explain.
Consider the mechanism for the following acid catalyzed hydration. Select all of the species that are intermediates in the mechanism for this reaction. XHOP. LOH oby None, the reaction is concerted and doesn't have any intermediates.
3. Draw a stepwise, detailed mechanism for the acid-catalyzed hydration reaction in question 2 above. Use curved arrows to indicate the flow of electrons. (Note: use hydronium ion, H307, in your mechanism to indicate "acidic water"). (6 pts) 4. Draw a stepwise, detailed mechanism for the reaction below. Use curved arrows to indicate the flow of electrons. (Hint: think of this reaction as a combination of addition of HX (step 1) and hydration (step 2)]. In the second step, an...
Draw a complete arrow pushing mechanism for the acid catalyzed hydration of 3 methyl 1 butane. Draw each step on a new line there are 4. Circle the final organic product of the reaction. Fill in each box with the best reagent to accomplish each trans formation: