Question

Which of the following IUPAC names is correct for the given compound?

A. Propylene Oxide
B. 1,2-Oxo propane
C. 1,2- Epoxypropane
D. 1,2-Propoxide

Answer 1

Hint: As per IUPAC the selection of the main chain in the given organic compound is the first criteria. After selection of the main chain the numbering to the carbon atoms is the most important step and later identification of the functional group in the given organic compound.

Complete answer:
- In the question it is asked to write the IUPAC name of the given compound.
- First, we have to find the main chain in the given organic compound.
- The structure of the given compound is as follows.

- The main chain is identified and marked with a box in the structure and it is as follows.

- Now we have to give numbering to the carbon atoms in the main chain starting the lowest number to the functional group containing the carbon atom and it is as follows.

- Next we have to identify the functional group name in the given compound.
- The functional group which is present in the given compound is epoxy.
- Therefore, the IUPAC name of the given compound is 1,2-Epoxypropane.

So, the correct option is C.

Note:
The position of the functional group should be numbered correctly with the lowest number and it is supposed to be mentioned in the IUPAC name while writing it. The functional name can be written at the starting or at the end of the IUPAC name.