Solve
Guides
0
You visited us 0 times! Enjoying our articles? Unlock Full Access!
Standard XII
Chemistry
Longest Chain Rule
Question

Which of the following is the correct IUPAC name?
  1. 4,4-bis(methyl)-3-ethylheptane
  2. 4,4-Dimethyl-3-ethylheptane
  3. 3-Ethyl-4,4- dimethylheptane
  4. 5-Ethyl-4,4-dimethylheptane

A
5-Ethyl-4,4-dimethylheptane
B
4,4-bis(methyl)-3-ethylheptane
C
3-Ethyl-4,4- dimethylheptane
D
4,4-Dimethyl-3-ethylheptane
Open in App
Solution
Verified by Toppr

While writing the name of the substituents in alphabetical order, the prefixes such as di, tri, tetra, penta, hexa, etc. are not considered. Therefore, as "e" of ethyl comes before "m" of dimethyl thus, lower locant 3 assigned to ethyl group and is written first.
Hence, the correct IUPAC name is 3-Ethyl-4,4-dimethylbutane.

Was this answer helpful?
11
Similar Questions
Q1
Which of the following rules are violated in naming H3C−C(CH3)2−CH2−CH(C2H5)−CH3 as 2-ethyl-4,4-dimethyl pentene?
View Solution
Q2
The alkene which gives 4,4-dimethylpentan-2-one on reductive ozonolysis is
View Solution
Q3
Following alkanes are wrongly named. Write their correct IUPAC names
(i) 2-Ethylbutane (ii) 4-Methylpentane (iii) 3,5-Dimethylhexane (iv) 5-Ethyl-4-methylheptane (v) 2,3-Dimethyl-3-ethylpentane (vi) 3-Methyl-4-isopropylheptane (vii) 4-Ethyl-5-sec-butylnonane
View Solution
Q4

Which one of the following forms an alcohol with nitrous acid solution at 00C


View Solution
Q5
CH3−CH3|CH−OH|CH−CH2−COOH
The IUPAC name of the above compound is:
View Solution