Mesityl oxide is an industrial chemical prepared by an aldol condensation. from what organic starting material is mesityl oxide prepared? it often contains about 10% of an isomer with the same carbon skeleton. what is the most likely structure for this contaminant?

2-bromo-2-methylbutane undergoes an e1 elimination reaction in the presence of ethanol. in the next reaction only one of the possible products is represented. although the product shown is not the major product of the reaction, notice that there is more than one way it can be produced. complete the mechanism and draw the missing substances.