Organic Chemistry
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Draw the complete mechanism of Claisen condensation reaction of isopropyl acetate and ethyl formate.
Write the complete mechanism for the reaction given below.
Determine the product of the reaction below.
Draw the major product of the reaction below.
Determine the major product of the reaction given below.
Propose the synthesis of the following compound using the starting material provided and any other reagents required.
Determine which of the esters shown below can go through Claisen condensation.
Determine the product formed in the crossed Claisen condensation reaction of the given molecules.
Determine the products formed in the Claisen condensation reaction of the given molecules.
Determine the final products formed in the self condensation reaction of the ester.
The following β-keto ester is synthesized through Claisen Condensation. Determine the structure of the ester(s) needed to produce this compound.
Determine which of the following compounds is a result of Dieckmann condensation, and then draw its appropriate starting diester.
How would you make the following compound using an aldol, Claisen, or another type of condensation?
Perkin condensation is quite similar to the aldol and Claisen condensations. Draw the structure of compounds formed when the product of the following Perkin condensation reaction is treated with water.
Draw the plausible products for the Claisen condensation given below.
To avoid unwanted side reactions, methoxide is used as the base in the Claisen condensation reaction of methyl propionate. Show the plausible side reactions when (i) potassium ethoxide and (ii) potassium hydroxide are used as a base instead of methoxide.
Propose the plausible products for the following Claisen condensation reactions.
(i) ethyl butanoate + NaOCH2CH3
(i) methyl 2-cyclopentylacetate + NaOCH3
Generally, when esters with only one α-hydrogen undergo condensation, they give poor yields of products. Draw the plausible mechanism for the following Claisen condensation reaction and explain why the product produced in this reaction yields poorly.
For the crossed Claisen condensation of the following pairs of esters below.
Predict the products and specify which pair of esters is a poor choice for this kind of reaction.
For the crossed Claisen condensation of the following pairs of esters, predict the products and specify which pair of esters is a poor choice for this kind of reaction.
Draw how to synthesize the following molecule using the appropriate condensation reaction.
What reactants and reagents are needed in a crossed Claisen condensation reaction to produce the following compound?
What reactants and reagents are required for a crossed Claisen condensation reaction to produce the following compound?
What are the starting materials needed for a crossed Claisen condenstation reaction to produce the following compound?
Determine the reactants needed for crossed Claisen condensation to produce the following compound.
Propose the plausible products for the Claisen condensations given below.
Determine the reactant(s) and reagents needed for crossed Claisen condensation to prepare the following compound.
Determine the reactant(s) and reagents needed for crossed Claisen condensation to synthesize the following compound.
Perkin reaction is the condensation of an aromatic aldehyde and acetic anhydride. It is analogous to aldol and Claisen condensations. Draw the major product of the following Perkin condensation.
Determine the product when the compound resulting from the Knoevenagel condensation shown below undergoes decarboxylation.
Knoevenagel condensation is the reaction of aldehyde or ketone that has no α-hydrogen with a compound that has α-carbon that is in between two electron-withdrawing groups. It is analogous to aldol and Claisen condensations. Draw the product of the following Knoevenagel condensation.
Knoevenagel condensation is a form of aldol condensation that involves the reaction between an active methylene group and an aldehyde or ketone to produce new C=C using amine base as a catalyst. Give the starting materials that are needed for this type of condensation to make the following compound.
Consider the reaction of the 1,6-diester shown below with an alkoxide ion to form a cyclic β-keto ester. Propose an arrow-pushing mechanism for the reaction.
Draw the main product of the reaction between dimethyl naphthalene-2,3-dicarboxylate and sodium methoxide, with the slow addition of methyl acetate followed by an acidic workup.
Draw the plausible mechanism for the given Claisen condensation.
Propose a plausible synthesis of the following molecule using either an aldol, Claisen, or any other kind of condensation reaction.