Draw out the machanism for the aldol condensation of (2E,6E)-2,6-bis(4-ethylbenzylidene)cyclohexanone. (the reaction between cyclohexanone and 4-methoxybenzaldehyde)
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Draw out the machanism for the aldol condensation of (2E,6E)-2,6-bis(4-ethylbenzylidene)cyclohexanone. (the reaction between cyclohexanone and 4-methoxybenzaldehyde)
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- Draw out the machanism for the aldol condensation of (2E,6E)-2,6-bis(4-ethylbenzylidene)cyclohexanone.In a mixed aldol condensation with unknown aldehydes and ketones experiment, some aldol condensation reactions need to be heated for the dehydration step to occur. Explain why that was not necessary for the reactions carried out in this experiment? [Hint: what makes the product especially stable?]. This experiment used ethanol, acetic acid, sodium hydroxide, cyclohexanone and 4- methoxybenzaldehyde.5. In the transition state for the proline-catalyzed aldol addition, a hydrogen bond is shown between the carboxylic acid of proline and isobutyraldehyde. Explain how this could lower the energy barrier for the reaction.
- Define Dehydration of the Aldol Product ?(b) Why is the Claisen-Schmidt reaction a special type of aldol condensation? one of the reactants does not have a β hydrogen one of the reactants is acetone the reaction is base-catalyzed one of the reactants does not have an α hydrogen (b) Aside from having a carboxylic acid functional group, salicylic acid also has which of the following functionality? aldehyde alcohol ester phenolConsider the aldol-dehydration reaction. Draw the two possible products of the reaction between benzaldehyde and ethylpropylketone. (Do not draw the products of the double-condensation.)
- Draw the enone product of aldol self- condensation of benzaldehyde. If self- condensation fails, tell OWL by drawing ethane, CH3CH3.Complete the aldol condensation reaction of cyclohexanone and ethylacetoacetate.2) Provide the structure of the two organic starting materials that are required to produce cinnamaldehyde (PhCH=CHCHO) via a crossed aldol condensation followed by dehydration?
- Draw the aldol product that will form when the two reactants are reacted in the presence of NaOH. Assume the reaction is done under conditions that force dehydration to take place. Do not draw inorganic byproducts. NaOH H.Give an example of a proline-catalyzed direct asymmetric aldol reactionHand writing please. In the aldol condensation reaction, you mixed 1,3-diphenylacetone with Benzil and then added the base to initiate the condensation reaction. In addition to the tetraphenylcyclopentadienone, what other organic product (it's an enone) would be formed if you mixed the 1,3-diphenylacetone with base and then added the Benzil?