Question

what is saytzeff's rule????​

Answer 1

In dehydrogenation reaction (removal of Hydrogen and Halogen atoms) from alkyl halide,

This is saytzeff rule states:

halogen atom is removed from alpha carbon (the carbon with with halogen is attached) and

hydrogen is removed from beta carbon (the carbon attached to the alpha carbon directly) which is itself attached with more no. of alkyl groups.

The product is alkene which has greater no. of alkyl groups attached to the doubly bonded carbon atoms.

Answer 2

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." For example: The dehydrohalogenation of 2-bromobutane yields two products 1-butene and 2-butene.