IUPAC Nomenclatures

The IUPAC nomenclature of the given compound

$ \text { 6-amino-2-bromo-5-hydroxy-3-oxohexanenitrile. } $

$ \text { The correct IUPAC name of } $

$ \text { 2-ethyl-5-methylhept-1-en-6-yn-4-ol } $

$ \text { The IUPAC names of } $

are respectively

2-nitro-1-phenyl-butane

1-ethyl-1-methyl-2-propylcyclohexane

$ \text { The correct IUPAC name of } $

The correct IUPAC name of mesityl oxide and oxalic acid are

4-methylpent-3-en-2-one and ethanedioic acid.

The correct order of decreasing priority of functional group is,

Acyl chloride $>$ Amide $>$ Aldehyde $>$ Alcohol

$ -\mathrm{COCl}>-\mathrm{CONH}_2>-\mathrm{CHO}>-\mathrm{OH} $

$ \text { The correct IUPAC name of } $

$ \text { 7-bromo-5-ethyl-2 methyl dec-5-en-4-ol } $

IUPAC name given in option (b) is not correct. The correct IUPAC name is

The IUPAC name is

4-methyl pentoxybenzene

The correct IUPAC name is

5-amino-1-hydroxy-3-methylhex-3-en-2-one

The IUPAC name of the given compound is, 5-ethyl-9-methyldec-6-en-4-ol

The IUPAC name of the given compound i.e.,

The IUPAC name of the given compound is 2-ethyl-5-hydroxy-3-methyl hept-3-enal.

$ \text { The given compound is } $

Its IUPAC name is 3-ethyl-4-methylhexane.

In the given structure, numbering of functional group is done as follows:

$ \begin{aligned} & So \,\,\text {, IUPAC name will be }\\ &\begin{aligned} & \text { 6-amino-5-(2, 2-dimethylpropyl) } \\ & \text { non-4-en-3-ol. } \end{aligned} \end{aligned} $

In given structure, numbering of carbon chain is done as follows :

So, IUPAC naming will be 5-chloro-4-fluoro-4, 5-dimethylnon-7-en-3-ol.

Tertiary amines have three alkyl groups attached to - N . The parent chain is selected with the highest number of -C atoms. Other alkyl groups are treated as substituents (in this case methyl and ethyl). While naming, the suffix ' e ' of arene is replaced by 'amine' and locant N is written before each substituent name (which follows alphabetical order).

∴ The IUPAC name will be N -ethyl-N-methylbenzenamine.

The priority order for the given functionalities in $-\mathrm{CN}>-\mathrm{OH}>-\mathrm{Br}$.

$\therefore$ The numbering will be done from $-$CN and in such a way that the groups get lowest number possible.

Hence, the IUPAC name will be 2-bromo-3-hydroxy benzonitrile.

$-$CHO group represent aldehyde group and denoted as ‘al’.

Branched chain is $-$CH$_3$ which present on 2 carbon position. Principle chain containing 4 carbon with aldehyde group.

IUPAC name-2 methyl butanal.

Diacetone alcohol is an organic compound with the formula $\mathrm{CH}_3 \mathrm{C}(\mathrm{O}) \mathrm{CH}_2 \mathrm{C}(\mathrm{OH})\left(\mathrm{CH}_3\right)_2$ called DAA. It is colourless liquid and commonly used in synthetic intermediate and as solvent also.