10.10 Predict all the alkenes that would be formed by dehydrohalogenation of the following halides with sodium ethoxide in ethanol and identify the major alkene:
(i) 1-Bromo-1-methylcyclohexane
(ii) 2-Chloro-2-methylbutane
(iii) 2,2,3-Trimethyl-3-bromopentane.
1−bromo−1−methylcyclohexane
In the given compound, all β-hydrogen atoms are equivalent. Thus, dehydrohalogenation
of this compound gives only one alkene.
(ii) 
In the given compound, there are two different sets of equivalent β-hydrogen atoms
labelled as a and b. Thus, dehydrohalogenation of the compound yields two alkenes.
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