What two roles does water play during acetal hydrolysis? nucleophile and base nucleophile and acid base and leaving group O acid and leaving group
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- Why is it not advisable to use aqueous hydrochloric acid in a Grignard reaction of a ketone? A) The Grignard reagent will react with the acid and cannot react with the ketone. B) The ketone will be protonated and will become unreactive. C) The ketone will form an unreactive enol. D) The Grignard reagent won't dissolve in aqueous solutionsWhy aldehydes and ketones do not undergo nucleophilic substitution reaction?When trichloroacetaldehyde is dissolved in water, almost all of it is converted to the hydrate. Chloral hydrate, the product of the reaction, is a sedative that can be lethal. A cocktail laced with it is known—in detective novels, at least—as a “Mickey Finn.” Explain why an aqueous solution of trichloroacetaldehyde is almost all hydrate.
- What is the major difference between the base-catalyzed and acid-catalyzed processes for nucleophilic addition of water to aldehydes and ketones? a. The base-catalyzed reaction takes place rapidly because hydroxide ion is a much better nucleophile than neutral water. b. The rate of reaction in base catalyzed process is slower than acid catalyzed process. c. The acid-catalyzed reaction takes place rapidly because the protonated carbonyl compound is a much better electrophile than the neutral compound. d. Only 1 and 3 are correct.Determine whether each nucleophilic acyl substitution is likely to occur.Select all that belongs to "Electrophile" accepts an electron pair to form a bond donates an electron pair to form a bond Weak Lewis Acid Electron rich Electron poor Substitutes leaving group in Sn1 and Sn2 reactions Partially positive Strong Lewis Acid MacBook Air F6 F7 F8 F9 F10 F4 F5 % & 5 6 7 8
- Explain why the reaction in Problem 18.48 proceeds dramatically more slowly under neutral conditions than under either acidic or basic conditions.Why is it important that we are very careful in how much acid is added to neutralize the reaction? (Only pick one answer) If the solution becomes very acid it can be harmful to the skin Too much acid will increase vanillyl alcohols water solubility and inhibit crystal formation Too much acid will decrease vanillyl alcohols water solubility and inhibit crystal formation Excess acid will deprotonate the vanillyl alcohol and inhibit crystal formationQuestion 13 of 17 Identify the best reagents to complete the following reaction. 1. PhNa A 2. Hao* 1. PHCH2MGBR B 2. H3o* 1. PhMgBr C 2. H3O* 1. H3O* D 2. PhMgBr PhMgBr Но Done