Chapter 11.3, Problem 5PTS

Nonconjugated , -unsaturated ketones, such as 3-cyclohexenone, are in an acid-catalyzed equilibrium with their conjugated , -unsaturated isomers. Propose a mechanism for this isomerization.

Identify the reagents you would use to achieve each of the following transformations.

Please provide the reagents for the following transformations.

Provide the reagents needed to bring about the following transformations.

Provide reaction mechanisms for the following transformations

Identify the correct reagent for each of the following reactions.

Propose an efficient synthesis for each of the following transformations:

When cis-2-decalone is dissolved in ether containing a trace of HCI, an equilibrium is established with trans-2-decalone. The latter ketone predominates in the equilibrium mixture. H H HCI cis-2-Decalone trans-2-Decalone Propose a mechanism for this isomerization and account for the fact that the trans iso- mer predominates at equilibrium.

Fill in the reagents for the following transformations. NO2 NH2 NEN CI CN