Question

Match the compounds given in List-I with List-II and select the suitable option using the codes given below

List-I		List-II
A	Benzaldehyde	1	Phenolphthalein
B	Phthalic anhydride	2	Benzoin condensation
C	Phenyl benzoate	3	Oil of wintergreen
D	Methyl salicylate	4	Fries rearrangement

• A. (A) $\to$ 4 ,(B) $\to$ 1 ,(C) $\to$ 3 ,(D ) $\to$ 2
• B. (A) $\to$ 4 ,(B) $\to$ 2 ,(C) $\to$ 3 ,(D ) $\to$ 1
• C. (A) $\to$ 2 ,(B) $\to$ 3 ,(C) $\to$ 4 ,(D ) $\to$ 1
• D. (A) $\to$ 2 ,(B) $\to$ 1 ,(C) $\to$ 4 ,(D ) $\to$ 3

Answer 1

Answer: (D)

(a) Benzoin condensation when an ethanolic solution of benzaldehyde is heated with strong alkali like $KCN$ or $NaCN$, we get benzoin.

(b) Formation of phenolphthalein When phenol is treated with phthalic anhydride in the presence of conc. $H_{2}S{O}_4$, it gives phenolphthalein, an indicator.

(c) Fries rearrangement Phenyl benzoate when heated with anhydrous $AlC{l}_3$ in the presence of inert solvent gives ortho-and para-hydroxybenzophenone. In this rearrangement, there is a benzoyl group migration from the phenolic oxygen to an ortho-and para-position.

(d) Methylsalicvlate

(A chief constituent of oil of wintergreen)