In step 1 of a reaction sequence, acetone is mixed with dimethyl amine and an acid catalyst, and water is selectively removed from the reaction mixture. In step 2 of the reaction sequence, 3-buten-2-one is introduced, and in step 3, an acidic water work- up is employed. What is the IUPAC name of the final organic product of this reaction sequence? Acetyl bromide, 1-propanol, and pyridine are each added to a reaction flask. What are the mechanistic steps for the reaction sequence that would occur? To answer, use the following numbering scheme: 1-pt., 2 = Nu attack, 3 = Loss of L, 4-SN2, 5-no reaction. For example, if you felt that two proton transfers were followed by loss ofa leaving group, you would write: 1,1,3 or 1, 1, 3.