How many sigma (sigma) and pi (pi) bonds are | vedclass

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(C) The Reimer-Tiemann reaction of phenol with $CHCl_3$ and $NaOH$ yields salicylaldehyde ($2$-hydroxybenzaldehyde) as the final product.The chemical

Vedclass · Accepted Answer

$15$ and $4$

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(C) The Reimer-Tiemann reaction of phenol with $CHCl_3$ and $NaOH$ yields salicylaldehyde ($2$-hydroxybenzaldehyde) as the final product.The chemical formula of salicylaldehyde is $C_7H_6O_2$.Structure: $A$ benzene ring with an $-OH$ group at position $1$ and a $-CHO$ group at position $2$.Counting $\sigma$ bonds:- $6$ $C-C$ bonds in the ring.- $4$ $C-H$ bonds on the ring.- $1$ $C-O$ bond (phenolic).- $1$ $O-H$ bond.- $1$ $C-C$ bond (between ring and $-CHO$).- $1$ $C-H$ bond (in $-CHO$).- $1$ $C-O$ bond (in $-CHO$).Total $\sigma$ bonds = $6 + 4 + 1 + 1 + 1 + 1 + 1 = 15$.Counting $\pi$ bonds:- $3$ $\pi$ bonds in the benzene ring.- $1$ $\pi$ bond in the $C=O$ group.Total $\pi$ bonds = $3 + 1 = 4$.Thus,the number of $\sigma$ and $\pi$ bonds are $15$ and $4$ respectively.

How many $\sigma$ (sigma) and $\pi$ (pi) bonds are present respectively in the final product obtained by the Reimer-Tiemann reaction of phenol?

Similar Questions

The Reimer-Tiemann reaction involves a

When phenol is reacted with $CHCl_3$ and $NaOH$ followed by acidification,salicylaldehyde is obtained. Which of the following species are involved in the above mentioned reaction as intermediates?

Identify the reaction shown below:
$C_6H_5OH + CH_2O \xrightarrow{\text{acid or base}} \text{o-hydroxybenzyl alcohol} + \text{p-hydroxybenzyl alcohol}$

In the following compounds,the order of acidity is:
$(I)$ Phenol
$(II)$ $p$-Cresol
$(III)$ $m$-Nitrophenol
$(IV)$ $p$-Nitrophenol

Which of the following is the weakest acid?

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