Reactions of differents halohydrins with tert-butoxide

I have two compounds (1​R,2​S)-3,3-dimethyl-2-bromocyclohexanol and (1​R,2​R)-3,3-dimethyl-2-bromocyclohexanol, both of them are treated with $\ce{KO^tBu}$ (a strong but bulky base) to form two different isomers of $\ce{C8H14O}$ which is not an alcohol.

I though that (1​R,2​R)-3,3-dimethyl-2-bromocyclohexanol is going to form an epoxide due the configuration of the halogen and the hydroxyl (although I don't know if it is required an specific configuration) and (1​R,2​S)-3,3-dimethyl-2-bromocyclohexanol is going to have a E2 reaction due steric hindrance but that will end with an alcohol anyway.

• Would be real nice if you upgraded to good English ;) – Mithoron Jan 29 '18 at 0:05