QQuestionChemistry
QuestionChemistry
Question: What are the two starting materials for a Robinson annulation? Multiple Choice an ab-Unsaturated carbonyl compound and an enolate a b-
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Step 1:I'll solve this problem following the specified LaTeX and formatting guidelines:
Step 2:: Understanding the Robinson Annulation
The Robinson annulation is a key organic reaction mechanism used to construct six-membered rings with a ketone functionality.
Step 3:: Identifying the Starting Materials
The two starting materials for a Robinson annulation are:
Step 4:
An $$\alpha$$-$$\beta$$-unsaturated carbonyl compound
Step 5:
An enolate ion
Step 6:: Breaking Down the Components
- The $$\alpha$$-$$\beta$$-unsaturated carbonyl compound typically has a carbon-carbon double bond adjacent to a carbonyl group
- The enolate is a resonance-stabilized anion formed by deprotonation of a carbonyl compound
Step 7:: Reaction Mechanism Overview
- Michael addition of the enolate to the $$\alpha$$-$$\beta$$-unsaturated carbonyl compound
The reaction involves: - Subsequent intramolecular aldol condensation
Final Answer
The two starting materials for a Robinson annulation are an \alpha-\beta-unsaturated carbonyl compound and an enolate.
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