Question

Giving one example for each, explain the following rules:
(i) Huckel Rule
(ii) Markownikoff's Rule
(iii) Saytzeff's Rule

Answer 1

Answer:

In organic chemistry, Hückel's rule estimates whether a planar ring molecule will have aromatic properties.

The rule states that with the addition of a protic acid HX to an asymmetric alkene, the acid hydrogen (H) gets attached to the carbon with more hydrogen substituents, and the halide (X) group gets attached to the carbon with more alkyl substituents.

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.