Friedel Crafts Alkylation Reaction
Introduction: In the experiment we will create 1,4-Di-t-Butyl-2,5-Dimethoxybenzene by performing a Friedel-Crafts reaction on 1,4-Dimethoxybenzene. In the reaction a t-butyl carbocation will be added on to the 1,4-Dimethoxybenzene. The t-butyl carbocation will be formed by a reaction of t-butyl alcohol with sulfuric acid. To perform the reaction we will create a mixture of the 1,4-Dimethoxybenzene, t-butyl alcohol with acetic acid. To this mixture we will add sulfuric acid dropwise through a separation funnel. We will then add this mixture to some crushed ice and water to precipitate the product. We will then filter the product, recrystallize the product, and then filter it again. After we have a product, we will record the weight and the melting point.
Table of Reagents: Mol. Wt. Mp. density
1,4-Dimethoxybenzene 138.17 g 57 °C
t-Butyl alcohol 74.12 g .79 g/ml
Sulfuric Acid 98.08 g 1.84......
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