8. Substitution reactions at a saturated carbon atom are typified by the reaction of halogeno-alkanes with aqueous base to produce alcohols. Monumental work has been done and revealed two types of kinetic behaviour. These types are designated SN1 and SN2.
(a) Outline the key differences between these two reaction mechanisms in terms of:
(i) the structure of the starting halogeno-alkanes
(ii) reaction intermediates and transition states
(iii) Reaction mechanisms and the rate equations
for this question , are my correct/
i) primary haloalkanes go via SN2, tertiary haloalkanes go via SN1. Secondary ones go via a bit of both
ii) in SN1 the reaction proceeds via a carbocation formed by the dissociation of the haloalkane.
in SN2 the reaction proceeds via a transtition state formed by the temporary combination of the haloalkane and the attacking nucleophile
are these two parts correct so far?