in the experiment \"synthesis of Acetylferrocene from Ferrocene and Acetic Anhyd
ID: 530546 • Letter: I
Question
in the experiment "synthesis of Acetylferrocene from Ferrocene and Acetic Anhydride": Write the detailed balanced equation for this experiment. What is the function of the phosphorie acid in the reaction? Why ferrocene is referred to as superaromatic ? (Justify your answer with it's structure)) d what should be the melting point of the product (acetylferrocene)? In the experiment "Thiamine-Catalyzed Benzoin Condensation" Write three characteristics or thymine hydrochloride that qualifies it to be an ideal catalyst for benzoin condensation.Explanation / Answer
a. Balanced equation,
Fe(C5H5)2 + (CH3CO)2O + H+ (cat) ---> (C5H5)Fe(C5H4COCH3) + CH3COOH + H+ (cat)
b. Phosphoric acid is a catalyst which protonated acetic anhydride to generate acetyl carbocation as electrophile.
c. Ferrocene has a fully conjugated aromatic system wherein the geometry of the two rings allow for an easy electrophilic aromatic substitution on the ferrocene system. Thus given the name superaromatic.
d. Melting point of acetylferrocene is 82 oC.
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