The IUPAC Name Of The Compound CH3 - CH (CH3) - CO - CH3 Is

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Q. The IUPAC name of the compound is 5642 211 UPSEEUPSEE 2018 Report Error A

3 - methyl - 2 - butanone

53% B

2 - methyl - 3 - butanone

13% C

isopropyl methyl ketone

20% D

2 ethyl - 2 methyl pentane

13%

Solution:

(i) For the structure, image Functional group is ketone, hence its secondary suffix is ‘one’. Now, the longest carbon chain containing the functional group has carbon atom. The word root is ‘but’. (ii) Further, since the longest chain is saturated, therefore its primary suffix is ‘ane’. (iii) Number the carbon atoms right to left, it given lowest vacant to functional group image and vacant to substituent methyl group. The name is -methyl--butanone.

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