Which of the following reactions involves the formation of a carbene intermediate?

Identify the products $A, B, C,$ and $D$ in the following reactions:

Based on the provided reaction scheme,determine the total number of stereoisomers of $B$.

Write the chemical reactions for the following conversions:
$1.$ Phenol to Anisole and Phenetole
$2.$ Chlorobenzene to $p$-Bromoanisole

What is the product of the following reaction?

In the given reaction sequence,identify the correct reagents to prepare $A$ from $B$. The starting material is benzenesulfonic acid. The reaction with $\Delta / H_3O^+$ yields $B$ (benzene),and the reaction with $1. \text{Fused } NaOH, 2. H^+$ yields $A$ (phenol). Therefore,to prepare $A$ (phenol) from $B$ (benzene),the correct sequence of reagents is: