Outline a complete mechanistic sequencefor the reaction of 2-bromobutane with potasium2-methyl-2-propoxide in 2-methyl-2-propanol solvent to form thethree alkenes generated in the reaction (1-butene, trans-2-butene,and cis-2-butene). Include a clear drawing of the anti-periplanartransition state for the formation of each alkene.