The names of the complete structural diagram shown in the questions are:
A. 2-fluoro-3,3-dimethylbutanal
B. Methyl 3,3,4-trimethylpentanoate
C. 4-methylpentanamide
How to obtain the names of the complete structure shown?
The names of the complete structural diagram shown can be determined as follow:
For diagram A:
- The structure has a functional group of CHO. Therefore, the structure is an alkanal compound
- The parent name is butanal since the longest chain has 4 carbon
- One fluoro, F group is located at carbon 2 and two methyl groups are located at carbon 3.
The name therefore is 2-fluoro-3,3-dimethylbutanal
For diagram B:
- The structure has a functional group of COO. Therefore, the structure is an alkanoate compound
- The group after the COO functional group is methyl. This will be named first followed by the rest.
- The parent name is pentanoate since the longest chain has 5 carbon
- Three methyl groups are present in the parent chain. Two are located at carbon 3 and the third at carbon 4
The name therefore is methyl-3,3,4-trimethylpentanoate
For diagram C:
- The structure has the functional group of CONH₂. Thus, the structure is an amide
- The parent name is pentanamide because it has a chain of 5 carbon as the longest
- The methyl group present is located at carbon 4
The name therefore is 4-methylpentanamide