H H H CHCНО, 20° Cinnamaldehyde нн OH CH:COCH3, 100° -CH3 Crossed aldol condensations Benzaldehyde Benzalacetone нн CH:COC Hs, 20° Benzalacetophenone
Q: 39) Complete the multi-step synthesis by showing the product structure of each step. NaNH2 H/Pd CH…
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A: The products of the above reactions are shown below.
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A: The nucleophilic order is as given below:
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A: Dear student this question is related to organic chemistry.
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Q: 3© Doaw the 'M-NMR 7 ace dyl aete ne and emplaie the Keto- enel taute merisom Cal culote th kete-…
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Q: 19 Which of the following ketoesters can be formed by Dieckmann cyclization? L: على علم بلنه DE A D…
A: Dieckmann cyclization : Intramolecular claisen condensation is known as Dieckmann cyclization.
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Q: Q9. Identify the product A of the following aldol reaction and draw a curved arrow mechanism to…
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Q: 39) Complete the multi-step synthesis by showing the product structure of each step. (18 pts) CH…
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Q: Scheme 4 Thisan m quion un 121421. ONOT paoonte ea This inanm questien OHT posteto one serves estion…
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Q: (10) 2 CH3COCH₂CH3 (11) (12) 1) NaOCH₂CH3 2) H30* Claisen condensation AICI₂ F-C acylation 2 CH₂MgBr…
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Q: What aldehyde or ketone is needed to prepare each compound by an aldol reaction?
A: To find: The aldehyde or ketone which is needed to prepare the given compound using aldol reaction
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Predict the mechanism for the following reactions in pecture:
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- Which of the following is an acetal? H3C H;C но CH3 CH3 H3C- H3C H3C H3C OH А C A and C B and D A O A, B, and D D B.Step 2: A hemiacetal formation has a similar mechanism to the hydrate reaction, except 1 equivalent of alcohol is added instead of water. 1² R₂ R₁ LOR3 R₁ R₂ The hemiacetal reaction is also reversible and can also be catalyzed by either acid or base. Hemiacetals are not usually isolated, except in the formation of 5- and 6-membered rings, as often seen in carbohydrate chemistry. Identify the hemiacetal formed from the intramolecular cyclization of the molecule shown. OH H OH R3OH OH OH OH CH₂OH NaOH ?Q5. What product is formed when cyclohexanone is reacted with each of the following reagents? MgBr KCN H30 H30 NABH, H30*
- The following isomerization reaction, drawn using D-glucose as starting material, occurs with all aldohexoses in the presence of base. Draw a stepwise mechanism that illustrates how each compound is formed. сно сно сно CH2OH C=0 H- OH H- -OH но- H- но H- "OH но H- Но H- но H- H- -H- H20 H- HO- O- H- -O- H- -OH -O- OH ČHOH CH,OH ČH2OH ČH2OH (recovered starting material) D-glucoseWhich of the following represents a hemiacetal? Et =ethyl H HO OH A x CH3O OCH3 B H HO OEt C DWhat product is formed when 2-acetylcyclopentanone is treated withNaOCH2CH3, followed by CH3I?
- 8) OH ел 'H HCI H2O W How many stereoisomers are possible for this cyclic hemiacetal? OH7) Which structure below represents a ketone? A) CH3CH2 0– CH,CH3 B) II C- Он C) CH3CH2C H D) -ċ-CH3 E) -NH2Which of the following is an acetal? A b с с D d E e c=0 H3C- C CH2 -C-0CH3 Нзс—О— С — ОН A B H3C-OCH2CH2O-CH3 CH-CH3 E