NEET 2007 Chemistry question

The product formed in Aldol condensation is

(1)an alpha, beta unsaturated ester
(2)a beta-hydroxy acid
(3)a beta-hydroxy aldehyde or a beta-hydroxy ketoneCorrect
(4)an alpha-hydroxy aldehyde or ketone

Answer: (3)

Solution

In the aldol reaction an aldehyde or ketone containing alpha hydrogen atoms, in the presence of dilute base, forms an enolate that adds to the carbonyl group of a second molecule. The initial product is a beta-hydroxy aldehyde (aldol) or a beta-hydroxy ketone (ketol),

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Question ID VK-089870