91Ó°ÊÓ

The substitution reaction which substitutes electrophiles (electron-deficient groups) forelectron-rich compounds is said to be an electrophilic substitution reaction.

The sulphuric acid is used to generate an electrophilic position on the alkene’s double bond and in the alcohol compound (dehydration process). The electrophilic positions get bonded with the substrate as an electrophile.

The electrophilic substitution is shown as:

a. The double bond of the cyclohexene takes the proton released from the sulphuric acid and makes the cyclohexene electrophile.

b. The similar process occurs for this part also as:

c. The -OH of the 2-methyl-pentane-2-ol generates tertiary carbocation electrophile by taking the proton from the sulphuric acid.

d. The OH of the cyclohexanol generates secondary carbocation electrophile by taking the proton from the sulphuric acid.