Which of the following compounds will undergo self aldol condensation in the presence of cold dilute alkali?

Question

Which of the following compounds will undergo self aldol condensation in the presence of cold dilute alkali? (A) CH 2= CH - CHO (B) C H ≡ C-C H O (C) C 6 H 5 CHO (D) CH 3 CH 2 CHO

Tardigrade Admin · Accepted Answer

Aldol condensation is given by only those aldehydes or ketones which have α-hydrogen atom on a saturated carbon; α-H present on unsaturated carbon atom cannot be easily removed by a base.

Q. Which of the following compounds will undergo self aldol condensation in the presence of cold dilute alkali?

$C H_{2} = C H - C H O$

$C H \equiv C - C H O$

$C_{6} H_{5} C H O$

$C H_{3} C H_{2} C H O$

Aldol condensation is given by only those aldehydes or ketones which have $α$ -hydrogen atom on a saturated carbon; $α - H$ present on unsaturated carbon atom cannot be easily removed by a base.

Q. Which of the following compounds will undergo self aldol condensation in the presence of cold dilute alkali?

CH2​=CH−CHO

CH≡C−CHO

C6​H5​CHO

CH3​CH2​CHO

Aldol condensation is given by only those aldehydes or ketones which have α-hydrogen atom on a saturated carbon; α−H present on unsaturated carbon atom cannot be easily removed by a base.

$C H_{2} = C H - C H O$

$C H \equiv C - C H O$

$C_{6} H_{5} C H O$

$C H_{3} C H_{2} C H O$

Aldol condensation is given by only those aldehydes or ketones which have $α$ -hydrogen atom on a saturated carbon; $α - H$ present on unsaturated carbon atom cannot be easily removed by a base.