2 Answered Questions for the topic regioselectivity

06/26/19

#### Why do SN2 reactions of alkyl halides proceed differently with KCN and AgCN?

Alkyl halides react with $\\ce{KCN}$ to form alkyl cyanides as the main product, whereas the use of $\\ce{AgCN}$ leads to isocyanides as the chief product. Why does this happen?

06/26/19

#### Is the ammonium substituent (-NH3+) really meta-directing in electrophilic substitution?

If we make a resonance structure for the anilinium ion, with positive charge at either the *ortho* or the *para* position, we get a pentavalent nitrogen, which is not possible. So, how is the... more

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