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Alexander Williamson prepared diethyl ether by a simple method, now called as Williamson’s ether Synthesis. In this method an alkyl halide is treated with sodium alkoxied prepared from sodium and alcohol.
This reaction is used in the synthesis of symmetrical and unsymmetrical ethers.It may be noted that for preparing unsymmetrical ethers, the halide used should preferably be primary because secondary and tertiary alkyl halides may form alkenes as major product due to elimination process
Aryl ethers or phenolic ethers can be prepared by using sodium phenoxide and alkyl halides. However,aryl halides and sodium alkoxide cannot be used for prepared phenolic ethers because aryl halides are less reactive towards nucleophilic substitution reactions.
Passage III
Alexander Williamson prepared diethyl ether by a simple method, now called as Williamson’s ether Synthesis. In this method an alkyl halide is treated with sodium alkoxied prepared from sodium and alcohol.
This reaction is used in the synthesis of symmetrical and unsymmetrical ethers.It may be noted that for preparing unsymmetrical ethers, the halide used should preferably be primary because secondary and tertiary alkyl halides may form alkenes as major product due to elimination process
Aryl ethers or phenolic ethers can be prepared by using sodium phenoxide and alkyl halides. However,aryl halides and sodium alkoxide cannot be used for prepared phenolic ethers because aryl halides are less reactive towards nucleophilic substitution reactions.
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