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Magazine Chapter 4: Q12. (page 140)
Give the structure corresponding to each IUPAC name.
a. 1,2-dimethylcyclobutane
b. 1,1,2-trimethylcyclopropane
c. 4-ethyl-1,2-dimethylcyclohexane
d. 1-sec-butyl-3-isopropylcyclopentane
e. 1,1,2,3,4-pentamethylcycloheptane
Short Answer
a.
b.
c.
d.
e.
Step by step solution
Step 1. IUPAC
IUPAC nomenclature is applicable all over the world. With the help of it, the naming of the different compounds could be done.
Step 2. Structure of a
The IUPAC name is given as 1,2-dimethylcyclobutane. It consists of four carbon atoms in cyclic form. Methyl groups are present at C-1 and C-2 atoms, respectively. The structure is shown below:
Structure of 1,2-dimethylcyclobutane
Step 3. Structure of b
The IUPAC name is given as 1,1,2-trimethylcyclopropane. It consists of three carbon atoms in cyclic form. Methyl groups are present at C-1, C-1, and C-2 atoms, respectively. The structure is shown below:
Structure of 1,1,2-trimethylcyclopropane
Step 4. Structure of c
The IUPAC name is given as 4-ethyl-1,2-dimethylcyclohexane. It consists of a six-carbon atom in cyclic form. Methyl groups are present at C-1 and C-2 atoms, and ethyl group is present at C-4 atom, respectively. The structure is shown below:
Structure of 4-ethyl-1,2-dimethylcyclohexane
Step 5. Structure of d
The IUPAC name is given as 1-sec-butyl-3-isopropylcyclopentane. It consists of five carbon atoms in cyclic form. The sec-butyl and isopropyl groups are present at C-1 and C-3 atoms, respectively. The structure is shown below:
Structure of 1-sec-butyl-3-isopropylcyclopentane
Step 6. Structure of e
The IUPAC name is given as 1,1,2,3,4-pentamethylcycloheptane. It consists of seven carbon atoms in cyclic form. The methyl groups are present at C-1, C-1, C-2, C-3, and C-4 atoms, respectively. The structure is shown below:
Structure of 1,1,2,3,4-pentamethylcycloheptane
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