Question: please explain :) The ,-unsaturated carbonyl compound shown below, is a key intermediate in the synthesis of Donepezil (Aricept ), a drug used to improve

please explain :) please explain :) The ,-unsaturated carbonyl compound shown below, is a key

The ,-unsaturated carbonyl compound shown below, is a key intermediate in the synthesis of Donepezil (Aricept ), a drug used to improve cognitive functions of Alzheimer's patients. What carbonyl starting materials are needed to prepare this compound

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