Q. When -bromopentane is heated with alcoholic solution of potassium hydroxide, the major product obtained is
Solution:
According to Saytzeff rule, in dehydrohalogenation reactions, the preferred product is that alkene which has the greater· number of 'alkyl groups attached to the doubly bonded carbon atoms. Thus, 2-bromoperttane gives pent-2-ene as the major product. .
