Question

what's the order of increasing SN2 reaction rate : 3-bromopentane , 2-bromopentane, 1-bromo-3-methylbutane, 1-bromo-2-methylbutane and 1-bromo-2,2-dimethylpentane

Answer 1

Arrange the compounds of each set in order of reactivity towards SN2 displacement: (i) 2-Bromo-2-methylbutane, 1-Bromopentane, 2-Bromopentane (ii) 1-Bromo-3-methylbutane, 2-Bromo-2-methylbutane, 2-Bromo-3-methylbutane(iii) 1-Bromobutane, 1-Bromo-2,2-dimethylpropane, 1-Bromo-2-methylbutane, 1-Bromo-3-methylbutane.