Question
Structures and IUPAC names of some hydrocarbons are given below: Explain why the names given in the parentheses are incorrect:
Solution
(a) Sum of the locant = 2 + 5 + 6=13 Sum of the locant = 3 + 4 + 7= 14 Lowest locant number 2, 5, 6 is lower than 3, 4, 7
(b) Substituents are in equivalent position, therefore lower number is given to the one that comes first in the name according to alphabetic order.
