Ethers can be prepared by Williamson synthesis in which an alkyl halide is reacted with sodium alkoxide. Di-tert-butyl ether can’t be prepared by this method. Explain.

Williamson synthesis, in which an alkyl halide is reacted with sodium alkoxide, can be used to make ethers. This technique cannot be used to make di-tert-butyl ether because elimination takes precedence over substitution in this situation.