Question

According to $IUPAC$, what is the systematic name of the compound shown below?

• A. $2,5,6$-triethyl-$1,3,4$-trimethyl cyclohexane
• B. $1,2,5$-triethyl-$3,46$-trimethyl cyclohexane
• C. $1,3,4$-triethyl-$2,5,6$-trimethyl cyclohexane
• D. $1,2,4$-triethyl-$3,5,6$-trimethyl cyclohexane

Answer 1

Answer: (D)

Same number series $1,2,3,4,5,6$ is obtained starting from any carbon of the ring. Hence, numbering is done giving preference to the ethyl group which comes before methyl group in alphabetical order