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- 3) Propose a mechanism for the following reaction. HO H2SO4Draw the structure of the hydroxyaldehyde product from the self-aldol reaction of each of the following aldehydes: (a) propanal; (b) phenylethanal; (c) 3-phenylpropanal; (d) benzaldehyde.Complete the following multistep syntheses by showing the major products and the reagents nessesary for each step
- Provide a retrosynthesis and a synthesis for each of the following compounds starting from the designated starting materials and any other necessary reagents.What reagents are required to carry out the following synthesis?4. Tertiary amines undergo reversible conjugate additions to a,ß-unsaturated carbonyls. The reaction shown below uses this phenomenon followed by an aldol-like process to obtain the given product. Show a detailed mechanism for this reaction. The structure of one of the intermediates is shown below to assist in drawing the mechanism ОН О Ph + Ph H. H2O/E1OH ОН О intermediate: Phi `NMe3
- Propose a mechanism for the following reaction.1. Draw mechanisms to show how the following a,ß-unsaturated ketone could be made from benzaldehyde (PhCHO) as one of the reactants using: (i) an aldol reaction (ii) a Wittig reaction, including preparation of the ylid. Ph Ph18en 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 react
