Aryl Methyl Ethers by Boron Tribromide

Demethylation of Aryl Methyl Ethers by Boron Tribromide 

Boron tribromide reacts with ethers by the sequence shown (22). The boron complex 

Compound Starting temp. CC) Moles BBrj compound mp of product (T) Yield (%) 

for example, A. I. Vogel, Practical Organic Chemistry, 3rd ed., p. 973. Longmans, London, 1956. 

One of the most powerful tools for the formation of cyclic molecules is the Diels-Alder reaction (/). The reaction generally involves the combination of a diene with a dienophile according to the diagram. There are surprisingly few limitations on the 

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Xn. Demethylation of Aryl Methyl Ethers by Boron Tribromide... 

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