Carboxylic Acid and Acid DerivativesMedium
Question
Which of the following undergoes haloform reaction ?
(i) CH3CH2 COCH2Cl (ii) C6H5COCH3
(iii) C6H5COCHCl2 (iv) CH3CH2COCCl3
(i) CH3CH2 COCH2Cl (ii) C6H5COCH3
(iii) C6H5COCHCl2 (iv) CH3CH2COCCl3
Options
A.only (ii)
B.(ii) and (iv)
C.(i), (ii) and (iv)
D.all the four
Solution
If we observe the haloform reaction carefully, we see that - COCH3 group is first halogented to the trihalo- COCX3 through monohalogeno ang dihalogeno compound. It is the - COCX3 patr which then undergoes nuclhilic adition. the produccy easily loses-CX3 since it is a very good leaving group.
Thus all compounds (I to IV)are ultimatelyconverted to CHCl3(chloroform).
Thus all compounds (I to IV)are ultimatelyconverted to CHCl3(chloroform).
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