Dehydration Lab Report

From the table, the result of dehydration of secondary alcohol is expected, and it undergoes E1 elimination. As supposed in the theory and mechanism, because elimination can occur both sides of secondary carbocation, so there are three products: 1-butene, trans-2-butene and cis-2-butene with three peaks. The main product is trans-2-butene, because it is the most stable compound. However, the result of dehydration of primary alcohol is not expected. It is supposed to form only one product, 1-butene, because a primary carbocation is formed and elimination can occur at terminal side. But the result has three products, which is explained that since there is no strong base and the mixture is under high temperature, so the primary carbocation conducted the hydride shift to form a secondary carbocation, which is more stable. Then elimination can occur both sides to form three products. The composition of three components between two
As supposed in the theory and mechanism, because elimination can occur both sides of secondary carbocation, so there are three products: 1-butene, trans-2-butene and cis-2-butene with three peaks. The main product is trans-2-butene, because it is the most stable compound. However, the result of dehydration of primary alcohol is not expected. It is supposed to form only one product, 1-butene, because a primary carbocation is formed and elimination can occur at terminal side. But the result has three products, which is explained that since there is no strong base and the mixture is under high temperature, so the primary carbocation conducted the hydride shift to form a secondary carbocation, which is more stable. Then elimination can occur both sides to form three products. The composition of three components between two reaction of dehydration of primary and secondary alcohol is different because of placing OH group to different