Question

The IUPAC name of dimethyl ether is

• A. ethoxymethane
• B. methoxymethane
• C. methoxyethane
• D. ethoxyethane

Answer 1

The correct option is B

methoxymethane

Explanation for correct option

(B) Methoxymethane

IUPAC System

• Find the carbon chain that is the longest.
• All of the substituents must be identified.
• From the end of the parent chain, count the carbons until the substituents have the lowest number.
• A prefix indicates how many times a substituent group appears (di, tri, tetra, etc.).
• A suffix or other element(s) indicates the presence of functional groups in the compound.
• If there are two or more substituents, they are listed alphabetically by base name.

Dimethyl ether

• Structure of dimethyl ether:

• The IUPAC name of dimethyl ether is methoxymethane.
• It is the organic compound with the formula ${\mathrm{CH}}_3{\mathrm{OCH}}_3$

Explanation for incorrect options

• The IUPAC name of dimethyl ether is methoxymethane. Hence all other options (A), (C) and (D) are incorrect.

Therefore, the correct option is (B) Methoxymethane.