Justify and arrange the following compounds of each set in increasing order of reactivity towards the asked displacement :
(a)
( reaction)
(b)
( reaction)
(a) 1-bromobutane< 2-bromobutane< 2-bromo-2-methylpropane.
Because Tertiary carbo cation is more stable than secondary than primary.
(b) 2-bromo-2-methyl propane < 2-bromobutane< 1-bromobutane.
Due to decrease in steric hindrance.