Question

Give the IUPAC name of each of the following compounds.

Short answer

(a) IUPAC name is$3methylpen\tan al$

(b) IUPAC name is $2pentenone$

(c) IUPAC name is $cyclopen\tan one$

(d) IUPAC name is $3chlorobenzaldehyde$

Step-by-step solution

Part (a) Step 1: Given Information

We need to find the IUPAC name of given compound.

Part (a) Step 2: Explanation

We are given a molecule in which we see there is a $C=O$group there has a higher preference to other groups that s why counting will start from that group so the IUPAC name of this molecule is$3methylpen\tan al$

Part (b) Step 1: Given Information

We need to find the IUPAC name of given compound.

Part (b) Step 2: Explanation

We are given a molecule in which we see there is a $C=O$group there has a higher preference to other groups that s why counting will start from that group or its near carbon so the IUPAC name of this molecule is $2pen\tan one$.

Part (c) Step 1: Given Information

We need to find the IUPAC name of given compound.

Part (c) Step 2: Explanation

We are given a molecule in which we see there is a $C=O$ group there has a higher preference to other groups that s why counting will start from that group so the IUPAC name of this molecule is$cyclopen\tan one$

Part (d) Step 1: Given Information

We need to find the IUPAC name of given compound.

Part (d) Step 2: Explanation

We are given a molecule in which we see there is a $-CHO$ group there has a higher preference to other groups that s why counting will start from that group and move toward 2nd group so the IUPAC name of this molecule is$3chlorobenzaldehyde$