CH 3 COOH ii 2 CH 2 N 2 i SOCl 2- CH 3 COHN 2 Ag 2 O H 2 O - CH 3 CH 2 COOHThe above set of reactions is named asA- Wolf reactionB- Darzen reactionC- Dakin reactionD- Arndt - Eistert reaction

The correct option is D Arndt Eistert reaction CH_3 COOH CH_3COCl CH_3COCHN_2 + HCl CH_3COCHN_2 CH_3CH_2COOH HCl so formed is removed by second molecule o ...

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Byju's Answer

Standard XII

Chemistry

Acyl Substitution Revisited

CH 3 COOH ii ...

Question

$C H_{3} C O O H (i) S O C l_{2} - ------ \to (i i) 2 C H_{2} N_{2} C H_{3} C O H N_{2} H_{2} O - -- \to A g_{2} O C H_{3} C H_{2} C O O H$
The above set of reactions is named as

Wolf reaction

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Darzen reaction

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Arndt - Eistert reaction

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Dakin reaction

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Solution

The correct option is C
Arndt - Eistert reaction

$C H_{3} C O O H S O C l_{2} - --- \to C H_{3} C O C l C H_{2} N_{2} - --- \to C H_{3} C O C H N_{2} + H C l$
$C H_{3} C O C H N_{2} H_{2} O - -------- \to A g_{2} O (C a t a l y s t) C H_{3} C H_{2} C O O H$
HCl so formed is removed by second molecule of $C H_{2} N_{2} (C H_{2} N_{2} + H C l \to C H_{3} C l + N_{2}$ other with diazoketone to form halomethyl ketone as the final product).
$C H_{3} C O C H N_{2} + H C l \to C H_{3} C O C H_{2} C l + N_{2}$

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CH3COOH(i)SOCl2−−−−−−−→(ii)2CH2N2CH3COHN2H2O−−−→Ag2OCH3CH2COOH The above set of reactions is named as

$C H_{3} C O O H (i) S O C l_{2} - ------ \to (i i) 2 C H_{2} N_{2} C H_{3} C O H N_{2} H_{2} O - -- \to A g_{2} O C H_{3} C H_{2} C O O H$
The above set of reactions is named as