What is A?

  • Option 1)

    Cis - 2 - butene

  • Option 2)

    Trans - 2 - butene

  • Option 3)

    1 - butene

  • Option 4)

    Butene

 

Answers (1)

As we learnt in 

Reaction of alkyl halide with KOH (alc) -

\beta- elimination reaction take place and produces alkenes.

- wherein

CH3CH2Br + KOH (alc.) \rightarrow H2C=CH2 + KBr + H2O

Potassium tertiary butoxide is bulky base, hence, show anti-elimination reaction 


Option 1)

Cis - 2 - butene

Option is incorrect

Option 2)

Trans - 2 - butene

Option is incorrect

Option 3)

1 - butene

Option is correct

Option 4)

Butene

Option is incorrect

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