The Robinson Annulation
Description: The Robinson annulation is a method for forming six membered rings. It is a sequential combination of the Michael reaction and the Aldol condensation.
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Real-Life Examples:
Org. Synth. 1961, 41, 38
DOI Link: 10.15227/orgsyn.041.0038
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What if we need to synthesis five membered ring instead of six member. What type of base will preferrably help.
Robinson annulation is not going to help in that case.