I have two questions:
1- Why the IUPAC name for Piperidine is Azacyclohexane? there is only 5 carbon in the ring, shouldn't it be azacyclopantane?
2- Re the IUPAC name for Pipecolic acid (1-azacyclohexane-2-carboxilic acid), the carboxyl groop is the main functional group. why is it given number 2 instead of 1?