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- The reaction below is a base-catalyzed aldol reaction. O || CH₂-C-H CH3-C-H Ethanal (Acetaldehyde) H I CH3-C-H Ethanal (Acetaldehyde) NaOH Draw curved arrows to show the movement of electrons in the step of the mechanism shown below. Arrow-pushing Instructions AC⇒x= :O: || :CH₂-C-H OH Bl CH3-CH—CH2-CH -CH₂-1-1 a 3-Hydroxybutanal (B-hydroxyaldehyde; formed as a racemic mixture) :0: :0: || CH3—CH—CH2-C-H A tetrahedral carbonyl addition intermediate Xtaneon lo robio i guiwollol o n 6A. Draw all of the possible aldol addition and condensation products from the following reaction (you may ignore stereochemistry of aldol products but not condensation): NaOH OMe ? H3C CH3 H OMe Jobong oryloby vithob plamH Aldol Reaction R. R مهمة RR OH R R Condensation Reaction R Dyle los H prip-pil Condensation Reaction RR OH R Aldol Reaction
- How to Converting an OH Group into a Better Leaving Group?What functional group is formed as the final product of an aldol condensation? A. B-hydroxycarbonyl В. a,B-unsaturated carbonyl C. enol D. enolateArSO,H Draw curved arrows to show the movement of electrons in the following step of an acid-catalyzed aldol condensation reaction. Arrow-pushing Instructions Hjö: H-Ö- -Ar H. Ar O=h=0
- Draw the major product of the aldol addition reaction. Ignore inorganic byproducts. I H H Q 1. NaOH 2. Neutralizing work-up Ato Drawing ar Draw d问题12 5分 In the mechanism for the following reaction, what takes place to lead to the major product? (Choose all that apply.) MgBr 1. (in THF) 2. H* (dilute) ning O the carbonyl oxygen is protonated first by an acid O the Grignard reagent adds to the carbonyl oxygen O the Grignard reagent adds to the carbonyl carbon Othree tetrahedral intermediates are formed during proton transferWhat is the best reaction to form a beta-ketone? 1. Aldol-Claisen Condensation 2. Aldol-Claisen Addition 3. Aldol Condensation 4. Claisen Condensation