In the reaction, the electrophile involved is, Alcohols Phenols and Ethers [2018]

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Solution

Q.
In the reaction,

the electrophile involved is [2018]

1 dichloromethyl cation $(\overset{+}{C} {HCl}_{2})$

2 formyl cation $(\overset{+}{C} HO)$

3 dichloromethyl anion $(\bar{C} {HCl}_{2})$

4 dichlorocarbene $(: {CCl}_{2})$

Ans.
(4)

It is Reimer–Tiemann reaction. The electrophile formed is dichlorocarbene $(: {CCl}_{2})$ which is formed according to the following mechanism:

Solution

Q. In the reaction, the electrophile involved is [2018]

1 dichloromethyl cation (C+HCl2)

2 formyl cation (C+HO)

3 dichloromethyl anion (C¯HCl2)

4 dichlorocarbene (:CCl2)

Ans. (4) It is Reimer–Tiemann reaction. The electrophile formed is dichlorocarbene (:CCl2) which is formed according to the following mechanism:

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Q.
In the reaction,

the electrophile involved is [2018]

1 dichloromethyl cation $(\overset{+}{C} {HCl}_{2})$

2 formyl cation $(\overset{+}{C} HO)$

3 dichloromethyl anion $(\bar{C} {HCl}_{2})$

4 dichlorocarbene $(: {CCl}_{2})$

Ans.
(4)

It is Reimer–Tiemann reaction. The electrophile formed is dichlorocarbene $(: {CCl}_{2})$ which is formed according to the following mechanism: