Question

Arrange the following in order of decreasing reactivity in SN’ give reason
a) 2-bromo-2-methyl butane
b) 2-bromo butane
c) 1-bromo butane

Answer 1

Answer:

Correct order is (a>b>c).

Explanation:

Reactivity of SN1 reaction directly proportional to stability of carbo cation , the above order is correct.

Order of stability of carbo cation is:

3°>2°>1°.

view image for clarity.

Hence above order is correct.