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-$3,4 6$-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