Robinson Annulation Quiz

What are the two major steps involved in the Robinson Annulation?

• Friedel-Crafts acylation and Diels-Alder reaction

• Michael reaction and intramolecular aldol reaction

• Hydroboration and oxidation

• Grignard reaction and esterification

In the Michael reaction, what is the role of NaOH?

• To oxidize the ketone

• To act as a catalyst for the reaction

• To deprotonate the alpha carbon and form an enolate

• To protonate the alpha carbon

What is the significance of the minor resonance contributor in the Michael reaction?

• It is not involved in the reaction

• It acts as a catalyst

• It is the most stable form of the enolate

• It helps in predicting the product more easily

What is the preferred ring size in an intramolecular aldol reaction?

• Seven-membered ring

• Five or six-membered ring

• Four-membered ring

• Three-membered ring

Why are certain enolizable hydrogens ruled out in the intramolecular aldol reaction?

• They are not present in the molecule

• They form unstable rings

• They do not form enolates

• They are not acidic enough

What is the result of deprotonating the most acidic hydrogen in the intramolecular aldol reaction?

• Formation of a three-membered ring

• Formation of a six-membered ring

• Formation of a seven-membered ring

• No reaction occurs

How many different products can result from the intramolecular aldol reaction pathways discussed?

• Three

• Four

• One

• Two

Which product is considered the most stable in the Robinson Annulation?

• Tetra-substituted alkene

• Tri-substituted alkene

• Di-substituted alkene

• Mono-substituted alkene

What is the main factor determining the major product in the Robinson Annulation?

• The stability of the alkene

• The size of the ring

• The number of enolizable hydrogens

• The presence of a catalyst

What is the purpose of heating in the final step of the Robinson Annulation?

• To reduce the ketone

• To lose a hydrogen and form an alkene

• To add a methyl group

• To form a new enolate