First slide

Alkenes

Question

2-chlorobutane is heated with alc.KOH. The product formed is

Moderate

A

2-butene
B

1-butene
C

1-butyne
D

2-butyne

Solution

Saytzeff’s rule
${CH}_{3} - \underset{\overset{|}{Cl}}{C} H - {CH}_{2} - {CH}_{3} + KOH (alc .) \to {CH}_{3} - CH = CH - {CH}_{3}$

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