Question

What is each compound’s systematic name?

Short answer

a) IUPAC name: 3,8 dibromo-cyclohex-4-ene

b) IUPAC name: (E)-2,3 diethyl-6 methyl-hept-2-ene

c) IUPAC name: 2,3 dimethyl-cyclohex-1-ene

d) IUPAC name: 3-ethyl-2-methyl-hept-2-ene.

e) IUPAC name: 4-methyl-cyclohex-1-ene.

f) IUPAC name: 3 ethyl-4-methyl-cyclohex-1-ene.

Step-by-step solution

Rules of IUPAC nomenclature

There are some rules to be followed for the naming of a structure and these are given as follows,

• 1.Finding the longest chain.
• 2.Numbering the chain according to the priority order of double bond, triple bond and functional group.
• 3.functional group should be written in an alphabetical order means if there is methyl and ethyl group, put ethyl group at 1^st as e comes earlier than m in Alphabets.
• 4. Between functional group and double or triple bond, double or triple bond gets more priority.

 IUPAC names of the given compounds

The systematic or the IUPAC name are given below, using the IUPAC rules.1^st we have levelled the longest chain considering the position of functional group, and then it is written in alphabetical order.

IUPAC name: 2,3 dimethyl-cyclohex-1-ene