Question

1. nomenclature challenge: name the following lewis, condensed and line - angle structures using iupac rules: a. b. c. d. (ch3)2chch2ch2c(ch3)3 e.

Explanation:

Step1: Identify parent - chain for a

The parent - chain is an octane ring. There are two substituents: a methyl group and an isopropyl group. Number the ring to give the lowest sum of locants.
1 - isopropyl - 4 - methylcyclooctane

Step2: Identify parent - chain for b

The longest continuous carbon - chain has 12 carbon atoms. There are methyl substituents at positions 4, 5, 7.
4,5,7 - trimethyldodecane

Step3: Identify parent - chain for c

The longest continuous carbon - chain has 8 carbon atoms. There are methyl, ethyl and propyl substituents. Number the chain to give the lowest sum of locants.
3 - ethyl - 4 - methyl - 5 - propyloctane

Step4: Identify parent - chain for d

The longest continuous carbon - chain has 7 carbon atoms. There are methyl substituents.
2,2,6 - trimethylheptane

Step5: Identify parent - chain for e

The longest continuous carbon - chain has 10 carbon atoms. There is a methyl substituent at the 4 - position.
4 - methyldecane

Answer:

a. 1 - isopropyl - 4 - methylcyclooctane
b. 4,5,7 - trimethyldodecane
c. 3 - ethyl - 4 - methyl - 5 - propyloctane
d. 2,2,6 - trimethylheptane
e. 4 - methyldecane