4. Give the structures of the aldol products that form when each of the following compounds or mixtures is treated with NAOH. a) Butanal b) Cyclopentanone c) Acetophenone d)-Chlorobenzaldehyde and 2,2-dimethylcyclohexanone
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- Draw the structure of the aldol that will form when cyclohexanone reacts with one mole ofbenzaldehyde. What is the name of this compound?Give the structures of the aldol products that form when each of the following compounds or mixtures is treated with NaOH. The top three compounds are aldol dimerizations and require 2 moles of the reactant listed, while the two compounds on the bottom row are being used in a mixed aldol reaction. Butanal, Cyclopentanone, and Acetophenone (PhCOCH3) p-chlorobenzaldehyde and 2,2-dimethylcyclohexanoneDoes it matter whether acetone is added first to the eq. NaOH solution then the benzaldehyde, or if the benzaldehyde is added first to the aq. NaOH solution, then the acetone in an aldol synthesis of dibenzalacetone
- What are the General Features of the Aldol Reaction ?For the “crossed” aldol reaction that lead to product C, did the kind of base used make any difference to the reaction outcome? If so, what happened? What is different between KOH and LDA Butyraldehyde + Benzaldehyde + Ethanol + KOH or LDA Butyraldehyde + Benzaldehyde + Ether + KOH or LDAIn theory, the intramolecular aldol reaction of 6-oxoheptanal could yield the three compounds shown. It turns out, though, that 1-acetylcyclopentene is by far the major product. Why are the other two compounds formed in only minor amounts? Draw a stepwise mechanism to show how all three products are formed.
- What are the products of an aldol cyclization for the following compound?Draw the product formed when each dicarbonyl compound undergoes anintramolecular aldol reaction followed by dehydration, when possible.Use the curved arrow formalism to draw the complete mechanism for the aldol addition reaction. (It is not necessary to show the aldol condensation step). The reaction is: butyraldehyde with ether solvent and KOH to form the product 2-ethyl-3-hydroxyhexanal
- Write the structure for each aldol condensation product that is possible when a mixture of ethanal and propanal is reacted with dilute NaOH.What product would you expect to obtain from aldol cyclization of hexanedial,OHCCH2CH2CH2CH2CHO?What is the product formed when each dicarbonyl compound undergoes an intramolecular aldol reaction, followed by dehydration.