Question

Question 7 3 pts Which of the following compounds will undergo an SN2 reaction most readily? (CH3)2CHCH2CH2CH2F (CH3)3CCH21 (CH3)2CHCH2CH2CH21 (CH3)2CHI

please help.

Answer 1

SN2 favored by primary carbon atom with low steric factor since it is a single step process. Also among F and I ,size
of I- is larger and hence C-I bond is weaker. Thus I- can be replaced more easily than F-
So (CH3)2CHCH2CH2CH2I ,(CH3)3CCH2I will undergo SN2 easily. Here (CH3)2CHCH2CH2CH2I
has less steric factor.

hence answer
(CH3)2CHCH2CH2CH2I