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| 1. |
Arrange the following in order of increasing ease towards nucleophilic substitution. 4-chloronitrobenzene, chlorobenzene, 2,4,6-trinitrochlorobenzene, 2,4-dinitrochlorobenzene. |
| Answer» SOLUTION :As the number of electron-withdrawing `NO_(2)` groups increases at o- and p-positions, the STABILITY of the intermediate carbanion increases and HENCE reactivity towards nucleophilic SUBSTITUTION increases in the same order, i.e., Chlorobenzenelt4-chloronitrobenzenelt2,4-dinitrochlorobenzenelt2,4,6 trinitrochlorobenzene. | |