Question

The correct IUPAC name of the compound,

• A. 5,6-diethyl-3-methyl-dec-4-ene
• B. 5,6-diethyl-8-methyl-dec-6-ene
• C. 6-butyl-5-ethyl-3-methyl-oct-4-ene
• D. 2,4,5-triethyl-3-nonene

Answer 1

The correct option is A 5,6-diethyl-3-methyl-dec-4-ene

According to IUPAC, the correct numbering of the following compound is:
the parent chain is of ten carbon so word root is dec.
Double bond is present 4th position. suffix used for double bond is 'ene'.
Ethyl group is present as a substituent at position 5 and 6. Also Methyl group is present as a substituent at position 3.
Hence, the correct IUPAC name is 5,6-diethyl-3-methyldec-4-ene.