Question 15.2: Assign IUPAC names to the following ketones. a....
Assign IUPAC names to the following ketones.
a. \begin{matrix} O \quad\quad\quad\quad\quad\quad \ \\ CH_{3}-\overset{||}{C}-CH_{2}-CH_{2}-CH_{3} \end{matrix} b. 
c. 
d. 
a. The parent chain name is pentanone. We number the chain from the end closest to the carbonyl carbon atom. Locating the carbonyl carbon at carbon 2 completes the name, 2-pentanone.
b. The longest carbon chain of which the carbonyl carbon is a member is four carbons long. The parent chain name is butanone. There is one methyl group attached, and the numbering system is from right to left.
The complete name for the compound is 3-methyl-2-butanone.
c. The base name is cyclohexanone. The methyl group is bonded to carbon 2 because we begin numbering at the carbonyl carbon. The name is 2-methylcyclohexanone.
d. This ketone has a base name of cyclopentanone. Numbering clockwise from the carbonyl carbon atom locates the bromo group on carbon 3. The complete name is 3-bromocyclopentanone.
