7  (i) 1-Methylcyclohexene
(ii)
A Mixture of but-1-ene and but-2-ene But-2-ene is the major product
formed due to rearrangement to give secondary carbocation 7 10
C H OH
2
5
CH3 – CH2 – CH –
CH3
CH – ONa
CH3
HBr
C H Br
2
5
C H Br
2
5
+
CH3 – CH2 – CH –
CH3
CH – OC H
2
5
CH3
2-Ethoxy-3-methylpentane
Rationalised 2023-24
226
Chemistry
7