In each reaction box, place the best reagent and conditions from the list below, There is more than one
possible mute.
Note: If one or more reagents are incorrectly placed, a single red X will appear on the top left.
Answer:
For the given reaction sequence the neccessary reagents for the each step are shown in the following image.
in the fitrst step ethylene glycol is used to protect the carbonyl of the starting material.
Then Mg is used to make the Grignard reagent.
Then butanal is reacted with the Grignard reagent in the previous step to add 4 carbon chain to the ring.
then PCC used to convert alcohol to ketone.
Then CH3MgBr is used to attack the carbonyl and form alcohol.
Then in the finall step the acid H3O+ is used to deprotect the carbonyl group to give the final product.