Final answer:
The request 'con' appears to be a typo and does not correspond to a chemical structure for IUPAC naming. Examples of correctly providing IUPAC names require analyzing structural formulas, and students should be aware of both old and new naming protocols.
Step-by-step explanation:
The student's question seems to include a typo or error ('con') which doesn't correspond to any known chemical structure. However, for the given IUPAC naming examples provided, the correct IUPAC names for each compound would be based on the structural formulae presented. For instance, in the provided examples one might be propan-2-ol, following the modern IUPAC nomenclature guidelines that prefer numbering as an infix. It is important for students to familiarize themselves with both old and new naming protocols to correctly name chemical compounds.