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Alicyclic Saturated and Unsaturated Nomenclature

IUPAC name of...

Question

IUPAC name of $(C H_{3})_{2} C = C (B r) C H_{2} - O H$ is

A

1,1-dimethyl-2-bromopropen-2-ol

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B

2-methyl-3-bromobut-2-en-1-ol

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C

3-bromo-2-Methylbut-2-en-3-ol

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D

2-bromo-3-methylbut-2-en-1-ol

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Solution

The correct option is D 2-bromo-3-methylbut-2-en-1-ol
The functional group present is alcohol (-OH) and alkene but -OH has higher priority than alkene.
Suffix used for -OH is 'ol'.
Halogens are always used as substituent. Since parent chain is of four carbon so word root is but. The correct numbering and IUPAC name is given by

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name of the following structure

{(C H}_{3})_{2} C = C H - C \equiv C - C H {(C H_{3})}_{2}

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Alicyclic Saturated and Unsaturated Nomenclature

Standard XII Chemistry

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