HBr reacts with CH2 = CH – OCH3 under anhydrous conditions at room temperature to give
CH3CHO and CH3Br
BrCH2CHO and CH3OH
BrCH2 – CH2 – OCH3
H3C – CHBr – OCH3
D.
H3C – CHBr – OCH3
Methyl vinyl ether is a very reactive gas. It is hydrolysed rapidly by dilute acids at room temperature to give methanol and aldehyde. However, under anhydrous conditions at room temperature, it undergoes many addition reactions at the double bond.
Electrophilic addition reaction more favourable.