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- Provide the reactant for the following reaction? ow all stereochemical products if required. H₂ Pt Draw the two stereoisomeric products for the following halohydrin reaction. Cl₂ MeOH@GMU 73765 What is the expected product A for the following intramolecular aldol reaction? O CH3 O NaOH A H3C EtOH H2 H3C H3C H C→XT OH H3C The aldol reaction is a carbonyl condensation reaction between two carbonyl partners and involves a combination of nucleophilic addition and a-substitution steps. One partner is converted into an enolate ion nucleophile and adds to the electrophilic carbonyl group of the second partner. In the classic aldol reaction, the carbonyl partners are aldehydes or ketones, although aldehydes are more reactive. The product is a ß-hydroxy carbonyl compound. base :0: OH H H Under reaction conditions slightly more vigorous than those employed for the aldol reaction, the ß-hydroxyl group is eliminated in an E1cB dehydration to give an a,ß-unsaturated carbonyl compound. Draw curved arrows to show the movement of electrons in this step of the mechanism. Arrow-pushing Instruct ns H3C heat OH H3C :0: H + H₂O H
- 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 X2 Moin H3C H H₂C C⇒x= base :0: OH Hori H3C H. The aldol reaction is a carbonyl condensation reaction between two carbonyl partners and involves a combination of nucleophilic addition and a-substitution steps. One partner is converted into an enolate ion nucleophile and adds to the electrophilic carbonyl group of the second partner. In the classic aldol reaction, the carbonyl partners are aldehydes or ketones, although aldehydes are more reactive. The product is a B-hydroxy carbonyl compound. Under reaction conditions slightly more vigorous than those employed for the aldol reaction, the ß-hydroxyl group is eliminated in an E1cB dehydration to give an a,ß-unsaturated carbonyl compound. Draw curved arrows to show the movement of electrons in this step of the mechanism. Arrow-pushing Instructions H₂C Ἡ :0: heat H Home H3C + H₂OThe given reaction scheme is an example of which type of reaction? O || R₁-C-OH + R₂-OH Oxidation Fischer esterification Nucleophilic substitution Reduction Rearrangement reaction Acid O || R₁-C-O-R₂ Meeting in "General"
- Identify a type of reaction that can be used to prepare the compound below without the need for any further reactions. MeO O Conjugate addition O enolate alkylation O Claisen condensation O aldol reaction Submit Answ18en the folbwng sequence of reac ond what wo structure of compound AT D (CH,,CULI 2) H,0 HN-CH, H,0 Select one 2.Wnchufthfollewine.comectly represert eet the stepm the rechnsnetamad altalcardensation reactReaction of the given D-aldose below with Ac₂0 can be catalyzed by BF3-Et20. Which of the following is the B-furanose structure of the product upon acetylation of the given aldose? Select one: CH₂OAc Aco OAc CH₂OAc OAC AC OAc O CH₂OAC OAc ỌAc ACO OAC OAc O CH,OAc ỌAC OAc HO CHO -OH -ОН CH₂OH
- Draw the mechanism for the reaction of an alkyl halide with sodium azide followed by reduction. Complete the mechanism of the initial step of the reaction, then identify the key intermediate and the product. Step 1: Draw curved arrows. o z + Na + || : z: I Step 2: Complete the intermediate. Na +I H H3C NOC XT :0: MET H₂C base H3C The aldol reaction is a carbonyl condensation reaction between two carbonyl partners and involves a combination of nucleophilic addition and a-substitution steps. One partner is converted into an enolate ion nucleophile and adds to the electrophilic carbonyl group of the second partner. In the classic aldol reaction, the carbonyl partners are aldehydes or ketones, although aldehydes are more reactive. The product is a ß-hydroxy carbonyl compound. H OH q H3C H₂C H Under reaction conditions slightly more vigorous than those employed for the aldol reaction, the ß-hydroxyl group is eliminated in an E1cB dehydration to give an a,ß-unsaturated carbonyl compound. Draw curved arrows to show the movement of electrons in this step of the mechanism. Arrow-pushing Instructions heat H H + H₂OQ/ Give the product for the following reactions: OH (1) Acetone + acetaldehyde OH (2)2 Acetone ? Q/ Give the mechanism of reactions (1) and (2). Q/ Give the mechanism of aldol condensation under the influence of dilute acid.