Question

In aldol addition reaction product is always:

(A) b – hydroxyaldehyde

(B) b – hydroxyketone

(C) a, b – unsaturated aldehyde

(D) a, b – unsaturated ketone​

Answer 1

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$<b>$

(A) b – hydroxyaldehyde

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Answer 2

ANSWER

(A) $\beta- hydroxyaldehyde$

Step By Step Explanation

-Adol addition reaction is an Shot name for Aldehyde and Alcohol addition reaction where a newly formed Enolate ready with either Aldehyde or Alcohol to form anol product which is basically a new carbon-carbon bond.

-Adol Addition reaction has 3 steps>

i)Deprotonation of Aldehyde

ii)Generation of Alkoxide Ion

iii)Protonation of Alkoxide Ion to form $\beta- hydroxyaldehyde$.

-Adol addition reactions are mostly favorable for Aldehyde but it doesn't hold well for most Ketones due to poor yield.

-And remember that it is an Reversible Process.