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Isomerism in Alkanols

Alkanols exhibit the following types of isomerism:

1. Chain Isomerism

Alkanols with four or more carbon atoms can exhibit this type of isomerism. For example, for C4H9OH the following chain isomers may be written.

2. Position Isomerism

Alkanols with three or more carbon atoms can exhibit position isomerism. For example,

3. Functional Isomerism

Alkanols with two or more carbon atoms can exhibit functional isomerism with ethers. Thus, ethers are the functional isomers of alkanols. For example,

CH3 CH2 CH2 CH2 OH                      CHFH2— O — CH2CH3

Butan-1 -ol                                          Ethoxyethane