Question

Which of the following is/are incorrect $IUPAC$ name?

• A. $4$-Chloro-$3$-methyl cyclopentanol-$1$
• B. $1$-Amino-$3$-bromo hexan-$2$-one
• C. $4$-Chloro-$3$-methyl cyclohexanoic acid
• D. $3$-Bromo-$1$-methyl hexan-$1$-ol

Answer 1

Answer: (A)

$4$-Chloro-$3$-methyl cyclopentanol-$1$

$4-Chloro-3-methyl-cyclopentanol-1$ is an incorrect $IUPAC$ name because $1$ should not come at last. As $1$ defines position of $-OH$ group so it should be written as $4-Chloro-3-methyl-cyclopentan-1-ol$.