Question

Predict the alkene formed by dehydrohalogenation of 1-bromo-1-cyclohexylethane.

Hint:

Elimination reactions usually follow Saytzeff rule → more substituted alkene major.

Answer 1

Dehydrohalogenation follows Saytzeff rule (more substituted alkene preferred). Removal of HBr forms: \[ \text{1-ethylcyclohexene (more substituted alkene)} \]