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Haloalkanes And Haloarenes

Question
CBSEENCH12010843

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

Solution

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.
HBr reacts with CH2 = CH – OCH3 under anhydrous conditions at ro