Question

The name of the compound is cyclohexyl Dene methadone.

A.True
B.False

Answer 1

Hint: The IUPAC nomenclature of organic chemistry is a system of organic chemical compounds in the nomenclature of chemicals as stated by the International Union of Pure and Applied Chemistry. Informally we call it Blue Book. The book mentions certain rules for the naming of compounds having functional groups.

Complete step by step answer:
If organic compounds contain one principal functional group then the longest continuous chain of carbon atoms having that functional group is selected. Functional groups are specific substituents in the molecules that are responsible for the characteristic chemical reactions of those molecules.
In the IUPAC nomenclature case, the root word is the number of total carbons in the longest chain of that compound.

No. of carbons	Root word
1	meth
2	eth
3	prop
4	but
5	pent

… and so on.
The primary suffix is used to differentiate between the saturated compounds( Alkanes) and unsaturated compounds (Alkene and Alkynes).

Compound	suffix
Alkane	ane
Alkene	Ene
Alkyne	Yne

If there is more than one suffix. Then one of those suffixes is considered as a secondary suffix.
Example: Methanol (Alkanol), here ‘ol’ is a secondary suffix.
The primary prefixes are used to differentiate between cyclic compounds and noncyclic or chain compounds. For cyclic compound prefix s ‘cyclo’. if there are any side chains or groups are present then secondary prefixes like ‘methyl’, ‘ethyl’ are used.
If the side chain is attached to the carbon of the main group then the name of the main group will end with the suffix. In this given compound the functional group is a ketone. Therefore the suffix “one” is used.
Now here the group “cyclohexyl” prefix “cyclo” is added. The suffix is “diene” and due to the main group ketone secondary suffix should be “one”. and one carbon is present so the word root is “meth”. Therefore, the correct IUPAC name of the given compound is,
Cyclohexyl Dene methadone.
So, the given statement is true.

The correct option is A.

Note: The structure of lindane is,
 

The IUPAC name of lindane is gamma-hexachlorocyclohexane. It is also called benzene hexachloride.
In this structure two chlorine atom which is cis to each other are at gamma position, that is why gamma is written in the IUPAC name.
It is a cyclic compound so the “cyclo” prefix is used. Six carbon is present in the ring so “hex” is word root. And “ane” is used as a primary suffix.
There are six chlorine atoms are present that is why “hexa cholo” is added in the name.