Question

explain the dehydrohalogenation( Beta elimination) of alkyl halides​

Answer 1

When haloalkane or alkyl halide with a β- hydrogen atom is heated with alcoholic solution of potassium hydroxide (alc.KOH), the OC2H5- ion acts as a base and eliminate an hydrogen from β- carbon atom then this elimination is known as β- elimination. There is also a simultaneous elimination of halogen atoms from α- carbon. As a result, an alkene is formed.

This reaction is also called dehydrohalogenation.