CI Br2, FeBr3

Predict the products of dehydrohalogenation and dehydration reactions, and use Zaitsev’s rule to predict the major and minor products

a) Write the name of three steps of free-radical halogenation of methane?b) Give the mechanism of formation of dichloromethane from chloromethane?c) Explain why free-radical halogenation usually gives mixture of products.

Arrange the following in order of decreasing reactivity to nucleophilic addition: ketone, aldehyde. Explain your logic.

Question:In organic chemistry, explain the concept of stereoselectivity and provide an example reaction where stereoselectivity plays a crucial role in determining the product formation.