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7: Reactions of Haloalkanes, Alcohols, and Amines ...
the other major mechanism for nucleophilic substitution. The SN2 Mechanism. In contrast with the two-step SN1 mechanism, the SN2 mechanism has just one step and no intermediates. R3C:X -:N → R3C:N -:X (5) The nucleophile -:N interacts directly with the haloalkane R3C:X by bonding to the C-X carbon while X is still bonded to C. 3
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