An aldehyde or ketone containing at least one | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(B) Aldehydes and ketones containing at least one $\alpha-H$ atom undergo a reaction in the presence of dilute alkali ($NaOH$ or $KOH$) to form $\beta

Vedclass · Accepted Answer

Aldol reaction

Vedclass · Answer

(B) Aldehydes and ketones containing at least one $\alpha-H$ atom undergo a reaction in the presence of dilute alkali ($NaOH$ or $KOH$) to form $\beta-$hydroxy aldehydes (aldol) or $\beta-$hydroxy ketones (ketol). This reaction is known as the Aldol reaction. When this product is heated,it undergoes dehydration to form $\alpha, \beta-$unsaturated carbonyl compounds,which is known as Aldol condensation. Since the question describes the formation of the $\beta-$hydroxy product,it is specifically referred to as the Aldol reaction.

Test	Inference
$(a)$ $2, 4-DNP$ test	Coloured precipitate
$(b)$ Iodoform test	Yellow precipitate
$(c)$ Azo-dye test	No dye formation

An aldehyde or ketone containing at least one $\alpha-H$ atom reacts with dilute $NaOH$ to form a $\beta-$hydroxy aldehyde or $\beta-$hydroxy ketone. This reaction is known as $—$

Similar Questions

Which of the following compounds undergoes aldol condensation?

Identify the products of the following reaction:
$HCHO + C_6H_5CHO \xrightarrow[ii. \ H_3O^+]{i. \ conc. \ NaOH} ?$

The tests performed on compound $X$ and their inferences are:

Test Inference

$(a)$ $2, 4-DNP$ test Coloured precipitate

$(b)$ Iodoform test Yellow precipitate

$(c)$ Azo-dye test No dye formation

Compound $X$ is:

$C_6H_{12}O_6$ $\xrightarrow{\text{Zymase}} A$ $\xrightarrow[\Delta]{NaOI} B + CHI_3$
The number of carbon atoms present in the product $B$ is $.....$

The reagent used in the Wolff-Kishner reduction is

Vedclass Test Series

Exam Paper Generator

Online Exam Module