1.

Which of these in not among the reaction products when a crossed aldol addition occurs between ethanol and butanal ?

Answer»

`CH_(3)oversetoverset(OH)(|)CHCH_(2)oversetoverset(H)(|)C=O`
`CH_(3)CH_(2)CH_(2)oversetoverset(OH)(|)CHundersetunderset(CH_(3))(|)CHCH_(2)oversetoverset(H)(|)C=O`
`CH_(3)oversetoverset(OH)(|)CHundersetunderset(CH_(2)CH_(3))(|)(CHCH)oversetoverset(H)(|)C=O`
`CH_(3)CH_(2)CH_(2)oversetoverset(OH)(|)CHCH_(2)CH_(2)oversetoverset(H)(|)C=O`

Answer :B


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