Question

Write the IUPAC name of ${\mathrm{CH}}_3{\mathrm{COCH}}_3$

Answer 1

IUPAC:

• It is a worldwide using chemical name created and developed by International Union for Pure and Applied Chemistry.
• There are certain rules for writing the IUPAC name of a compound.

${\mathrm{CH}}_3{\mathrm{COCH}}_3$:

• The IUPAC name should follow the general formula: $\mathrm{Locant}+\mathrm{prefix}+\mathrm{root}+\mathrm{locant}+\mathrm{suffix}$

Step 1: Finding the number of carbon atoms and the highest carbon chain:

• Here, the compound contains three carbon atoms, the highest carbon chain is the straight chain.
• Hence, the root word of the compound is Prop-

$\mathrm{C}-\mathrm{C}-\mathrm{C}$

Step 2: Finding and positioning of substituents:

• Here, there are no substituents present in this compound. So, no need to tell the position of the compound.

Step 3: Finding functional groups and addition of prefixes and suffix and their positioning:

• The functional group present here is a ketone $-\mathrm{C}=\mathrm{O}-$, the primary suffix is -ane due to ketone group presence, so the secondary suffix becomes -one.
• There are no locants present here, only root and suffix.
• Hence, the IUPAC name of this ${\mathrm{CH}}_3{\mathrm{COCH}}_3$compound is $\mathrm{Propanone}$.