Which from following is a correct priority order for selection of principal functional group for…

1. $-\mathrm{COOH}\gt-\mathrm{SO}_3 \mathrm{H}\gt-\mathrm{COOR}$
2. $-\mathrm{COOR}\gt-\mathrm{COOH}\gt-\mathrm{SO}_3 \mathrm{H}$
3. $-\mathrm{SO}_3 \mathrm{H}\gt-\mathrm{COOR}\gt-\mathrm{COOH}$
4. $-\mathrm{COOR}\gt-\mathrm{SO}_3 \mathrm{H}\gt-\mathrm{COOH}$

Solution

The principal functional group is decided on the basis of the following order of priority: $\begin{aligned} & -\mathrm{COOH}\gt-\mathrm{SO}_3 \mathrm{H}\gt-\mathrm{COOR}\gt \\ & -\mathrm{COCl}\gt-\mathrm{CONH}_2\gt-\mathrm{CN}\gt-\mathrm{CHO}\gt \end{aligned}$

Asked in: MHT CET 2024 (09 May Shift 2)

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