Chlorination of 2-butanone
Butanone reacts with chlorine to form two isomeric products 1-chlorobutan-2-one and 3-chlorobutan-2-one
These two different isomers can be achieved by the initial formation of the two possible enol forms of 2-butanone
Butanone has two different types of α-carbon atoms. So, these two carbon atoms are involved in tautomerism to form two enol intermediates as follow
Enol intermediate-1 reacts with chlorine to form 1-chlorobutan-2-one
Enol intermediate-2 reacts with chlorine to form 3-chlorobutan-2-one
:The reaction is as follows
