Question

Total sum of $\alpha -H$ in major product(s) (alkene) of each of the following reactions.

Answer 1

(a) and (b) give Saytzeff products as the major products (the more substituted alkene) and (c) gives Hoffmann's product as the major product (the less substituted alkene).
(d) is a redox reaction where $Zn$ is oxidised and dihalide is reduced.