question_answer

In which of the following \[\alpha \]-elimination occurs?

(I)

(II)

(III)

(IV) \[P{{h}_{2}}CHCl+\overset{\Theta }{\mathop{N}}\,{{H}_{2}}\xrightarrow{{}}\]

A) I, II       

B)                I, IV                  

C) II, III                   

D) II, IV

Correct Answer: B

Solution :

[b] (I) It is an example of \[\alpha \]-elimination. (II) It is an example of \[\gamma \]-elimination. (III) It is an example of \[\beta \]-elimination. (IV) It is an example of \[\alpha \]-elimination.