The correct IUPAC name of the incorrect name 4-amino-3-hydroxy-2-butene is:

1-amino-2-hydroxy-2-butene

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4-amino-2-buten-3-ol

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1-Amino-2-buten-2-ol

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1-amino-2-butenol

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Solution

The correct option is B 1-Amino-2-buten-2-ol
It contains amino group at the first carbon, a carbon-carbon double bond between second and third carbon, and a hydroxy substituent at the second carbon atom.

The numbering is done in such a way that the amino and hydroxyl substituents get the lowest possible number.

The correct IUPAC name of the incorrect name 4-Amino-3-hydroxy-2-butene will be 1-Amino-2-buten-2-ol.

Option C is correct.

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Draw the structures of isomers of butene and write their IUPAC names.

H_{2} S O_{4}

The IUPAC name of the compound having the formula $C H \equiv C - C H = C H_{2}$ is

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