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Introduction to Aldehydes and Ketones

A compound ...

Question

A compound $^{'} X^{'} (C_{2} H_{4} O)$ on oxidation gives $^{'} Y^{'} (C_{2} H_{4} O_{2}) .^{'} X^{'}$ undergoes haloform reaction. On treatment with $H C N^{'} X^{'}$ forms a product $^{'} Z$ which on hydrolysis gives $2 -$ hydroxy propanoic acid.
Write down structures of $^{'} X^{'}$ and $^{'} Y$ '.

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Solution

$X = C H_{3} C H O$ and $Y = C H_{3} C O O H$

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Similar questions

^{'} X^{'} (C_{2} H_{4} O)

on oxidation gives

^{'} Y^{'} (C_{2} H_{4} O_{2}) .^{'} X^{'}

undergoes haloform reaction. On treatment with

H C N^{'} X^{'}

forms a product

^{'} Z

which on hydrolysis gives

2 -

hydroxy propanoic acid.
Name of the product when

^{'} X^{'}

d i l . N a O H

(C_{4} H_{8} O)

, which undergoes haloform reaction gives compound B on reduction. B on heating with sulphuric acid gives a compound C which forms mono-ozonide D. D on hydrolysis in presence of zinc dust gives only acetaldehyde E. Identify A, B, C, D and E. Write the reactions involved.

Q. Compound 'A' reacts with

P C l_{5}

to give 'B' which on treatment with KCN followed by hydrolysis gave propanoic acid as the product. What is 'A'?

Q. An organic compound (A) gives positive Liebermann reaction and on treatment with

C H C l_{3} / K O H

followed by hydrolysis gives (B) and (C) ,. Compound (B) gives colour with Schiff's reagent but not (C), which is steam - volatile. (C) on treatment with

L I A l H_{4}

C_{7} H_{8} O_{2}

which on oxidation gives 9E), Compound (E) reacts with

{(C H_{3} C O)}_{2} O / C H_{3} C O O H

to give a pain - reliever (F), Give structure of (A) to (F) with proper reasoning.

Q. A compound X decolourises

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to give an addition product. X reacts with HBr to form Y.Y reacts with NaOH to form, Z, On oxidation Z gives hexan-3-one. X,Y and Z in the reactions are :

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Introduction to Aldehydes and Ketones

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